The Collaborative International Dictionary of English v.0.48:

Pearl \Pearl\ (p[~e]rl), n.
   A fringe or border. [Obs.] -- v. t. To fringe; to border.
   [Obs.] See Purl.
   [1913 Webster]

   Pearl stitch. See Purl stitch, under Purl.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pearl \Pearl\, n. [OE. perle, F. perle, LL. perla, perula,
   probably fr. (assumed) L. pirulo, dim. of L. pirum a pear.
   See Pear, and cf. Purl to mantle.]
   1. (Zool.) A shelly concretion, usually rounded, and having a
      brilliant luster, with varying tints, found in the mantle,
      or between the mantle and shell, of certain bivalve
      mollusks, especially in the pearl oysters and river
      mussels, and sometimes in certain univalves. It is usually
      due to a secretion of shelly substance around some
      irritating foreign particle. Its substance is the same as
      nacre, or mother-of-pearl.

   Note: Pearls which are round, or nearly round, and of fine
         luster, are highly esteemed as jewels, and at one time
         compared in value with the precious stones. Since
         development of cultured pearls, the relative value has
         diminished somewhat, though the best pearls are still
         expensive, and natural pearls even more so. Artificial
         pearls may be made of various materials, including
         material similar to that of natural pearls; these are
         less expensive than natural or cultured pearls. See
         cultured pearl, below.
         [1913 Webster +PJC]

   2. Hence, figuratively, something resembling a pearl;
      something very precious.
      [1913 Webster]

            I see thee compassed with thy kingdom's pearl.
                                                  --Shak.
      [1913 Webster]

            And those pearls of dew she wears.    --Milton.
      [1913 Webster]

   3. Nacre, or mother-of-pearl.
      [1913 Webster]

   4. (Zool.) A fish allied to the turbot; the brill.
      [1913 Webster]

   5. (Zool.) A light-colored tern.
      [1913 Webster]

   6. (Zool.) One of the circle of tubercles which form the bur
      on a deer's antler.
      [1913 Webster]

   7. A whitish speck or film on the eye. [Obs.] --Milton.
      [1913 Webster]

   8. A capsule of gelatin or similar substance containing some
      liquid for medicinal application, as ether.
      [1913 Webster]

   9. (Print.) A size of type, between agate and diamond.
      [1913 Webster]

   Ground pearl. (Zool.) See under Ground.

   Pearl barley, kernels of barley, ground so as to form
      small, round grains.

   Pearl diver, one who dives for pearl oysters.

   Pearl edge, an edge of small loops on the side of some
      kinds of ribbon; also, a narrow kind of thread edging to
      be sewed on lace.

   Pearl eye, cataract. [R.]

   Pearl gray, a very pale and delicate blue-gray color.

   Pearl millet, Egyptian millet (Penicillaria spicata).

   Pearl moss. See Carrageen.

   Pearl moth (Zool.), any moth of the genus Margaritia; --
      so called on account of its pearly color.

   Pearl oyster (Zool.), any one of several species of large
      tropical marine bivalve mollusks of the genus
      Meleagrina, or Margaritifera, found in the East Indies
      (especially at Ceylon), in the Persian Gulf, on the coast
      of Australia, and on the Pacific coast of America. Called
      also pearl shell, and pearl mussel.

   Pearl powder. See Pearl white, below.

   Pearl sago, sago in the form of small pearly grains.

   Pearl sinter (Min.), fiorite.

   Pearl spar (Min.), a crystallized variety of dolomite,
      having a pearly luster.

   Pearl white.
      (a) Basic bismuth nitrate, or bismuth subchloride; -- used
          chiefly as a cosmetic.
      (b) A variety of white lead blued with indigo or Berlin
          blue.

   cultured pearl, a pearl grown by a pearl oyster into which
      a round pellet has been placed, to serve as the seed for
      more predictable growth of the pearl. The pellet is
      usually made from mother-of-pearl, and additional layers
      of nacre are deposited onto the seed by the oyster. Such
      pearls, being more easily obtained than natural pearls
      from wild oysters, are less expensive.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pearl \Pearl\ (p[~e]rl), a.
   Of or pertaining to pearl or pearls; made of pearls, or of
   mother-of-pearl.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pearl \Pearl\, v. t.
   1. To set or adorn with pearls, or with mother-of-pearl. Used
      also figuratively.
      [1913 Webster]

   2. To cause to resemble pearls; to make into small round
      grains; as, to pearl barley.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pearl \Pearl\, v. i.
   1. To resemble pearl or pearls.
      [1913 Webster]

   2. To dive or hunt for pearls; as, to go pearling.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Brill \Brill\, n. [Cf. Corn. brilli mackerel, fr. brith
   streaked, speckled.] (Zool.)
   A fish allied to the turbot (Rhombus levis), much esteemed
   in England for food; -- called also bret, pearl, prill.
   See Bret.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pearl
    n 1: a smooth lustrous round structure inside the shell of a
         clam or oyster; much valued as a jewel
    2: a shade of white the color of bleached bones [syn: bone,
       ivory, pearl, off-white]
    3: a shape that is spherical and small; "he studied the shapes
       of low-viscosity drops"; "beads of sweat on his forehead"
       [syn: drop, bead, pearl]
    v 1: gather pearls, from oysters in the ocean

Moby Thesaurus II by Grady Ward, 1.0:

134 Moby Thesaurus words for "pearl":
   Quaker-colored, acceptable person, acier, alabaster, alabastrine,
   albescent, ashen, ashy, bead, boast, canescent, capital fellow,
   catch, chalk, cinereous, cinerous, cream, creamy, dapple,
   dapple-gray, dappled, dappled-gray, dewdrop, diamond, dingy,
   dismal, dove-colored, dove-gray, dreary, driven snow, drop,
   droplet, dull, dun-white, dusty, eggshell, fair, find, fleece,
   flour, flower, foam, gem, gentleman, glaucescent, glaucous,
   godsend, good fellow, good lot, good man, good person, good sort,
   good thing, good woman, gray, gray-black, gray-brown, gray-colored,
   gray-drab, gray-green, gray-spotted, gray-toned, gray-white,
   grayed, grayish, griseous, grizzle, grizzled, grizzly, honest man,
   iron-gray, ivory, ivory-white, jewel, lady, lead-gray, leaden,
   light, lily, lint-white, livid, maggot, mensch, milk,
   mouse-colored, mouse-gray, mousy, nonpareil, off-white, pale,
   paper, pearl-gray, pearly, pearly-white, perfect gentleman,
   perfect lady, persona grata, plum, pride, pride and joy, prince,
   prize, raindrop, real man, right sort, rough diamond, sad, sheet,
   silver, silver-gray, silvered, silvery, slate-colored, slaty,
   smoke-gray, smoky, snow, sober, somber, steel-gray, steely,
   stone-colored, swan, taupe, teardrop, treasure, trophy, trouvaille,
   whitish, whity, windfall, winner, wonder, worthy



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PEARL
       Process and Experiment Automation Realtime Language


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

PEARL

   1.  A language for constructive
   mathematics developed by Constable at Cornell University in
   the 1980s.

   2.  Process and Experiment Automation
   Real-Time Language.

   3.  One of five pedagogical languages
   based on Markov algorithms, used in "Nonpareil, a Machine
   Level Machine Independent Language for the Study of
   Semantics", B. Higman, ULICS Intl Report No ICSI 170, U London
   (1968).  Compare Brilliant, Diamond, Nonpareil, Ruby.

   4.  A multilevel language developed by Brian Randell
   ca 1970 and mentioned in "Machine Oriented Higher Level
   Languages", W. van der Poel, N-H 1974.

   5.  An obsolete term for Larry
   Wall's PERL programming language, which never fell into
   common usage other than in typographical errors.  The missing
   'a' remains as an atrophied remnant in the expansion
   "Practical Extraction and Report Language".

   ["Programming Perl", Larry Wall and Randal L. Schwartz,
   O'Reilly & Associates, Inc.  Sebastopol, CA.  ISBN
   0-93715-64-1].

   (2000-08-16)


Easton's 1897 Bible Dictionary:

Pearl
   (Heb. gabish, Job 28:18; Gr. margarites, Matt. 7:6; 13:46; Rev.
   21:21). The pearl oyster is found in the Persian Gulf and the
   Red Sea. Its shell is the "mother of pearl," which is of great
   value for ornamental purposes (1 Tim. 2:9; Rev. 17:4). Each
   shell contains eight or ten pearls of various sizes.


U.S. Gazetteer Places (2000):

Pearl, IL -- U.S. village in Illinois
   Population (2000):    187
   Housing Units (2000): 96
   Land area (2000):     1.506776 sq. miles (3.902531 sq. km)
   Water area (2000):    0.086843 sq. miles (0.224922 sq. km)
   Total area (2000):    1.593619 sq. miles (4.127453 sq. km)
   FIPS code:            58343
   Located within:       Illinois (IL), FIPS 17
   Location:             39.458611 N, 90.624433 W
   ZIP Codes (1990):     62361
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Pearl, IL
    Pearl


U.S. Gazetteer Places (2000):

Pearl, MS -- U.S. city in Mississippi
   Population (2000):    21961
   Housing Units (2000): 9128
   Land area (2000):     21.832393 sq. miles (56.545635 sq. km)
   Water area (2000):    0.216072 sq. miles (0.559625 sq. km)
   Total area (2000):    22.048465 sq. miles (57.105260 sq. km)
   FIPS code:            55760
   Located within:       Mississippi (MS), FIPS 28
   Location:             32.271979 N, 90.105266 W
   ZIP Codes (1990):     39208
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Pearl, MS
    Pearl