The Collaborative International Dictionary of English v.0.48:

Register \Reg"is*ter\ (r?j"?s*t?r), n. [OE. registre, F.
   registre, LL. registrum,regestum, L. regesta, pl., fr.
   regerere, regestum, to carry back, to register; pref. re- re-
   + gerere to carry. See Jest, and cf. Regest.]
   1. A written account or entry; an official or formal
      enumeration, description, or record; a memorial record; a
      list or roll; a schedule.
      [1913 Webster]

            As you have one eye upon my follies, . . . turn
            another into the register of your own. --Shak.
      [1913 Webster]

   2. (Com.)
      (a) A record containing a list and description of the
          merchant vessels belonging to a port or customs
          district.
      (b) A certificate issued by the collector of customs of a
          port or district to the owner of a vessel, containing
          the description of a vessel, its name, ownership, and
          other material facts. It is kept on board the vessel,
          to be used as an evidence of nationality or as a
          muniment of title.
          [1913 Webster]

   3. [Cf. LL. registrarius. Cf. Regisrar.] One who registers
      or records; a registrar; a recorder; especially, a public
      officer charged with the duty of recording certain
      transactions or events; as, a register of deeds.
      [1913 Webster]

   4. That which registers or records. Specifically:
      (a) (Mech.) A contrivance for automatically noting the
          performance of a machine or the rapidity of a process.
      (b) (Teleg.) The part of a telegraphic apparatus which
          records automatically the message received.
      (c) A machine for registering automatically the number of
          persons passing through a gateway, fares taken, etc.;
          a telltale.
          [1913 Webster]

   5. A lid, stopper, or sliding plate, in a furnace, stove,
      etc., for regulating the admission of air to the fuel;
      also, an arrangement containing dampers or shutters, as in
      the floor or wall of a room or passage, or in a chimney,
      for admitting or excluding heated air, or for regulating
      ventilation.
      [1913 Webster]

   6. (Print.)
      (a) The inner part of the mold in which types are cast.
      (b) The correspondence of pages, columns, or lines on the
          opposite or reverse sides of the sheet.
      (c) The correspondence or adjustment of the several
          impressions in a design which is printed in parts, as
          in chromolithographic printing, or in the manufacture
          of paper hangings. See Register, v. i. 2.
          [1913 Webster]

   7. (Mus.)
      (a) The compass of a voice or instrument; a specified
          portion of the compass of a voice, or a series of
          vocal tones of a given compass; as, the upper, middle,
          or lower register; the soprano register; the tenor
          register.
          [1913 Webster]

   Note: In respect to the vocal tones, the thick register
         properly extends below from the F on the lower space of
         the treble staff. The thin register extends an octave
         above this. The small register is above the thin. The
         voice in the thick register is called the chest voice;
         in the thin, the head voice. Falsetto is a kind off
         voice, of a thin, shrull quality, made by using the
         mechanism of the upper thin register for tones below
         the proper limit on the scale. --E. Behnke.
         [1913 Webster]
      (b) A stop or set of pipes in an organ.
          [1913 Webster]

   Parish register, A book in which are recorded the births,
      baptisms, marriages, deaths, and burials in a parish.
      [1913 Webster]

   Syn: List; catalogue; roll; record; archives; chronicle;
        annals. See List.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Register \Reg"is*ter\ (r[e^]j"[i^]s*t[~e]r), v. t. [imp. & p. p.
   Registere (-t?rd); p. pr. & vb. n. Registering.] [Cf. F.
   regisrer, exregistrer, LL. registrare. See Register, n.]
   1. To enter in a register; to record formally and distinctly,
      as for future use or service.
      [1913 Webster]

   2. To enroll; to enter in a list.
      [1913 Webster]

            Such follow him as shall be registered. --Milton.
      [1913 Webster]

   3. (Securities) To enter the name of the owner of (a share of
      stock, a bond, or other security) in a register, or record
      book. A registered security is transferable only on the
      written assignment of the owner of record and on surrender
      of his bond, stock certificate, or the like.
      [Webster 1913 Suppl.]

   Registered letter, a letter, the address of which is, on
      payment of a special fee, registered in the post office
      and the transmission and delivery of which are attended to
      with particular care.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Register \Reg"is*ter\, v. i.
   1. To enroll one's name in a register.
      [1913 Webster]

   2. (Print.) To correspond in relative position; as, two
      pages, columns, etc., register when the corresponding
      parts fall in the same line, or when line falls exactly
      upon line in reverse pages, or (as in chromatic printing)
      where the various colors of the design are printed
      consecutively, and perfect adjustment of parts is
      necessary.
      [1913 Webster]

WordNet (r) 3.0 (2006):

register
    n 1: an official written record of names or events or
         transactions [syn: register, registry]
    2: (music) the timbre that is characteristic of a certain range
       and manner of production of the human voice or of different
       pipe organ stops or of different musical instruments
    3: a book in which names and transactions are listed
    4: (computer science) memory device that is the part of computer
       memory that has a specific address and that is used to hold
       information of a specific kind
    5: an air passage (usually in the floor or a wall of a room) for
       admitting or excluding heated air from the room
    6: a regulator (as a sliding plate) for regulating the flow of
       air into a furnace or other heating device
    7: a cashbox with an adding machine to register transactions;
       used in shops to add up the bill [syn: cash register,
       register]
    v 1: record in writing; enter into a book of names or events or
         transactions
    2: record in a public office or in a court of law; "file for
       divorce"; "file a complaint" [syn: file, register]
    3: enroll to vote; "register for an election"
    4: be aware of; "Did you register any change when I pressed the
       button?" [syn: record, register]
    5: indicate a certain reading; of gauges and instruments; "The
       thermometer showed thirteen degrees below zero"; "The gauge
       read `empty'" [syn: read, register, show, record]
    6: have one's name listed as a candidate for several parties
       [syn: cross-file, register]
    7: show in one's face; "Her surprise did not register"
    8: manipulate the registers of an organ
    9: send by registered mail; "I'd like to register this letter"
    10: enter into someone's consciousness; "Did this event register
        in your parents' minds?"

Moby Thesaurus II by Grady Ward, 1.0:

504 Moby Thesaurus words for "register":
   English horn, French pitch, accord, account, account book,
   accountant, accounts payable ledger, accounts receivable ledger,
   act, act as foil, active list, adversaria, advise, agree,
   aide-memoire, amanuensis, annals, annotation, answer to, appear,
   archives, archivist, arm, armor, assail the ear, assent,
   assort with, balance sheet, bank ledger, bankbook, barnstorm,
   bassoon, be consistent, be glimpsed, be heard, be of one,
   be uniform with, betray, blacklist, bless, block flute, bombard,
   book, booking, bookkeeper, books, bound, bourdon, calendar,
   card ledger, caress the ear, carry, carve, cash register, cashbook,
   catalog, cataloging, catalogue, catch a likeness, cello, chalk,
   chalk up, champion, character, characterize, chart, check,
   check in, check sheet, checklist, chime, chromatic scale,
   chronicle, chronicling, chronology, civil list, claribel, clarinet,
   clarion, classical pitch, clerk, cloak, clock card, cohere,
   coincide, come home to, come out, communicate, compass,
   compass about, concert flute, concur, condition, confine, conform,
   conform with, conserve, consist with, contact, contain, cooperate,
   copyright, cornet, cornopean, correspond, correspondence,
   cost card, cost ledger, cost sheet, cover, cromorna, cushion, cut,
   cymbel, date slip, datebook, dawn on, daybook, defend, delineate,
   depict, depth, diagram, diapason, diary, directory, discipline,
   display, divulge, docket, documentalist, documentation,
   dodecuple scale, dovetail, draw, draw the line, dulciana, emote,
   emotionalize, engrave, engraver, enharmonic scale, enlistment,
   enroll, enrollment, enscroll, ensure, enter, entering, entry,
   enumerate, enumeration, exhibit, express, factory ledger,
   fall in together, fence, fend, file, filing clerk, fill out,
   fit together, flute stop, footnote, foundation stop, fourniture,
   gain a hearing, gamba, gamut, gedeckt, gemshorn, get across,
   get over, get through to, get to, get top billing, go together,
   go with, grave, great scale, guarantee, guard, hang together,
   harbor, harmonic flute, harmonize, haven, hedge about, height,
   high pitch, history, hit, hit off, hold together, hybrid stop,
   impanel, impanelment, impress, incise, index, indexing, indicate,
   inscribe, inscribing, inscription, insert, insertion, insure,
   interlock, intersect, inventory, inventorying, item, itemization,
   itemize, items, jibe, jot down, jotting, journal, keep, keep alive,
   keep from harm, keep intact, keep inviolate, keep safe, keep score,
   keep up, key, koppel flute, larigot, ledger, letters, librarian,
   limit, limn, list, listing, lock, log, logbook, logging, low pitch,
   maintain, major scale, make a memorandum, make a note,
   make an entry, make an impression, make known, make oneself heard,
   make out, make safe, manifest, map, marginal note, marginalia,
   mark, mark down, marker, match, matriculate, matriculation,
   measure, melodia, melodic minor, memo, memoir, memorandum,
   memorial, mime, minor scale, minute, minutes, mixture, moderate,
   mutation stop, narrow, nazard, nestle, new philharmonic pitch,
   not destroy, not endanger, not expend, not use up, not waste,
   notary, notary public, notate, notation, note, note down, oboe,
   occur to, octave, octave scale, organ stop, overlap, paint,
   pantomime, parallel, passbook, patent, patter, penetrate,
   pentatonic scale, perform, philharmonic pitch, philosophical pitch,
   piccolo, picture, picturize, pigeonhole, pipe roll, pitch,
   place upon record, play, play the lead, playact, plein jeu,
   point to, police, poll, portray, posaune, post, post up, posting,
   preserve, principal, print, program, protect, prothonotary,
   purchase ledger, put down, put in writing, put on paper,
   put on tape, qualify, quint, quintaten, radius, range, rank,
   ranket, reach, reach the ear, read, record, record book,
   record clerk, record keeping, recordation, recorder, recording,
   recording instruments, recordist, reduce to writing, reed stop,
   reflect, register with, registrar, registration, registry, relic,
   remains, reminder, render, repertory, report, represent,
   respond to, restrain, restrict, retired list, reveal,
   ride shotgun for, rohr flute, roll, roll call, rolls, roster, rota,
   rub, safeguard, sales journal, sales ledger, save, say, scale,
   scant, schedule, schematize, scholia, scholium, scope, score,
   scorekeeper, scorer, screen, scribe, scrivener, scroll, secretary,
   secure, sesquialtera, set down, shawm, shelter, shield, show,
   shroud, sick list, sign in, sign on, sing in chorus, sink in,
   sketch, soak in, sort with, spare, specialize, specify, spectrum,
   spitz flute, square, square with, stand together, standard pitch,
   star, steal the show, stenographer, stint, stock ledger,
   stonecutter, stooge, stop, stopped diapason, stopped flute,
   stores ledger, straiten, stretch, string diapason, string stop,
   support, suspense ledger, sustain, sweep, symbolize, table,
   tabulate, tabulation, take a rubbing, take down, take note of,
   tally, tally sheet, tape, tape-record, temperament, tierce, till,
   time book, time chart, time scale, time schedule, time sheet,
   time study, timecard, timekeeper, timetable, token, tonality, tone,
   trace, trace out, trace over, transmit, tread the boards, tremolo,
   trombone, troupe, trumpet, tune, tuning, twelfth, unda maris,
   underwrite, uphold, upstage, vestige, vibrato, videotape, viola,
   voix celeste, vox angelica, vox humana, whole-tone scale, write,
   write down, write in, write out, write up



The Free On-line Dictionary of Computing (30 December 2018):

register

   1. One of a small number of high-speed memory locations in a
   computer's CPU.  Registers differ from ordinary
   random-access memory in several respects:

   There are only a small number of registers (the "register
   set"), typically 32 in a modern processor though some,
   e.g. SPARC, have as many as 144.  A register may be directly
   addressed with a few bits.  In contrast, there are usually
   millions of words of main memory (RAM), requiring at least
   twenty bits to specify a memory location.  Main memory
   locations are often specified indirectly, using an indirect
   addressing mode where the actual memory address is held in a
   register.

   Registers are fast; typically, two registers can be read and a
   third written -- all in a single cycle.  Memory is slower; a
   single access can require several cycles.

   The limited size and high speed of the register set makes it
   one of the critical resources in most computer architectures.
   Register allocation, typically one phase of the back-end,
   controls the use of registers by a compiled program.

   See also accumulator, FUBAR, orthogonal, register
   dancing, register allocation, register spilling.

   2. An addressable location in a memory-mapped peripheral
   device.  E.g. the transmit data register in a UART.


Bouvier's Law Dictionary, Revised 6th Ed (1856):

REGISTER, common law. The certificate of registry granted to the person or
persons entitled thereto, by the collector of the district, comprehending
the port to which any ship or vessel shall belong; more properly, the
registry itself. For the form, requisites, &c. of certificate of registry,
see Act of Con. Dec. 31, 1792; Story's Laws U. S. 269 3 Kent, Com. 4th ed.
141.



Bouvier's Law Dictionary, Revised 6th Ed (1856):

REGISTER, evidence. A book containing a record of facts as they occur, kept
by public authority; a register of births, marriages and burials.
     2. Although not originally intended for the purposes of evidence,
public registers are in general admissible to prove the facts to which they
relate.
     3. In Pennsylvania, the registry of births, &c. made by any religious
society in the state, is evidence by act of assembly, but it must be proved
as at common law. 6 Binn. R. 416. A copy of the register of births and
deaths of the Society of Friends in England, proved before the lord mayor of
London by an ex parte affidavit, was allowed to be given in evidence to
prove the death of a person; 1 Dall. 2; and a copy of a parish register in
Barbadoes, certified to be a true copy by the rector, proved by the oath of
a witness, taken before the deputy secretary of the island and notary
public, under his hand and seal was held admissible to prove pedigree; the
handwriting and office of the secretary being proved. 10 Serg. & Rawle, 383.
     4. In North Carolina, a parish register of births, marriages and
deaths, kept pursuant to the statute of that state, is evidence of pedigree.
2 Murphey's R. 47.
     5. In Connecticut, a parish register has been received in evidence. 2
Root, R. 99. See 15 John. R. 226. Vide 1 Phil. Ev. 305; 1 Curt. R. 755; 6
Eng. Eccl. R. 452; Cov. on Conv. Ev. 304.



Bouvier's Law Dictionary, Revised 6th Ed (1856):

REGISTER or REGISTRAR. An officer authorized by law to keep a record called
a register or registry; as the register for the probate of wills.



U.S. Gazetteer Places (2000):

Register, GA -- U.S. town in Georgia
   Population (2000):    164
   Housing Units (2000): 73
   Land area (2000):     0.780722 sq. miles (2.022060 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.780722 sq. miles (2.022060 sq. km)
   FIPS code:            64372
   Located within:       Georgia (GA), FIPS 13
   Location:             32.366495 N, 81.883543 W
   ZIP Codes (1990):     30452
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Register, GA
    Register