The Collaborative International Dictionary of English v.0.48:

Buzz \Buzz\ (b[u^]z), v. i. [imp. & p. p. Buzzed (b[u^]zd); p.
   pr. & vb. n. Buzzing.] [An onomatop[oe]ia.]
   To make a low, continuous, humming or sibilant sound, like
   that made by bees with their wings. Hence: To utter a
   murmuring sound; to speak with a low, humming voice.
   [1913 Webster]

         Like a wasp is buzzed, and stung him.    --Longfellow.
   [1913 Webster]

         However these disturbers of our peace
         Buzz in the people's ears.               --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Buzz \Buzz\, v. t.
   1. To sound forth by buzzing. --Shak.
      [1913 Webster]

   2. To whisper; to communicate, as tales, in an under tone; to
      spread, as report, by whispers, or secretly.
      [1913 Webster]

            I will buzz abroad such prophecies
            That Edward shall be fearful of his life. --Shak.
      [1913 Webster]

   3. To talk to incessantly or confidentially in a low humming
      voice. [Colloq.]
      [1913 Webster]

   4. (Phonetics) To sound with a "buzz". --H. Sweet.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Buzz \Buzz\, n.
   1. A continuous, humming noise, as of bees; a confused
      murmur, as of general conversation in low tones, or of a
      general expression of surprise or approbation. "The
      constant buzz of a fly." --Macaulay.
      [1913 Webster]

            I found the whole room in a buzz of politics.
                                                  --Addison.
      [1913 Webster]

            There is a buzz all around regarding the sermon.
                                                  --Thackeray.
      [1913 Webster]

   2. A whisper; a report spread secretly or cautiously.
      [1913 Webster]

            There's a certain buzz
            Of a stolen marriage.                 --Massinger.
      [1913 Webster]

   3. (Phonetics) The audible friction of voice consonants. --H.
      Sweet.
      [1913 Webster]

WordNet (r) 3.0 (2006):

buzz
    n 1: sound of rapid vibration; "the buzz of a bumble bee" [syn:
         buzz, bombilation, bombination]
    2: a confusion of activity and gossip; "the buzz of excitement
       was so great that a formal denial was issued"
    v 1: make a buzzing sound; "bees were buzzing around the hive"
         [syn: buzz, bombinate, bombilate]
    2: fly low; "Planes buzzed the crowds in the square"
    3: be noisy with activity; "This office is buzzing with
       activity" [syn: hum, buzz, seethe]
    4: call with a buzzer; "he buzzed the servant"

Moby Thesaurus II by Grady Ward, 1.0:

279 Moby Thesaurus words for "buzz":
   DDD, Indian file, alert, array, articulation, assibilate,
   assibilation, bank, bark, bawl, belch, bellow, birr, blare, blat,
   blubber, bombilate, bombinate, boom, bray, breathe, bruit, bum,
   bumble, burr, bustle, busy signal, buzz, buzz about, cackle, call,
   call up, canard, catena, catenation, caw, chain, chain reaction,
   chaining, chant, chirp, chirr, clang, clangor, clank, clash,
   common talk, concatenation, confide, confide to, connection,
   consecution, continuum, coo, course, craunch, croak, crow, crump,
   crunch, cry, cycle, descent, dial, dial tone,
   direct distance dialing, drawl, drone, effervesce, effervescence,
   effervescing, endless belt, endless round,
   entrust with information, exclaim, ferment, file, filiation, fizz,
   fizzle, fizzling, flute, flutter, flying rumor, frication,
   frictional rustling, fuss, gamut, gasp, give a ring,
   give confidential information, gossip, gradation, grapevine, grind,
   groan, growl, grumble, grunt, hang up, hearsay, hedgehop, high,
   hiss, hissing, hold the phone, hum, hurry about, hush, hushing,
   idea afloat, jangle, jar, keen, kick, latrine rumor, let in on,
   let next to, lilt, line, lineage, lisp, listen in, local call,
   long distance, long-distance call, make a call, make a fuss,
   mention privately, mobile call, monotone, mumble, murmur, mutter,
   news stirring, nexus, on-dit, pant, paresthesia, pendulum,
   periodicity, person-to-person call, phone, phone call,
   pins and needles, pipe, plenum, powder train, prickle, prickles,
   prickling, progression, purr, put hep, put next to, queue, range,
   rank, rasp, recurrence, report, reticulation, rhonchus, ring,
   ring off, ring up, roar, roorback, rotation, round, routine, row,
   rumble, rumor, run, rush about, rush around, scale, scranch,
   scrape, scratch, scream, screech, scrunch, scuttlebutt, sensation,
   sequence, series, shriek, shush, shushing, sibilance, sibilate,
   sibilation, siffle, sigh, sigmatism, signal, sing, single file,
   siss, sissing, sizz, sizzle, sizzling, snap, snarl, sneeze,
   sneezing, sniff, sniffle, snore, snort, snuff, snuffle, sob,
   spectrum, spit, splutter, sputter, squall, squash, squawk, squeal,
   squelch, squish, station-to-station call, sternutation, stertor,
   stimulation, sting, stinging, stir, string, strum, succession,
   summon, swath, swish, talk, tear around, telephone, telephone call,
   thread, thrill, thrum, thunder, tier, tingle, tingling, tip,
   tip off, toll call, town talk, train, trumpet, twang,
   unconfirmed report, undercurrent, urtication, wail, warble, wheeze,
   whine, whir, whish, whisper, whistle, whistling, white noise, whiz,
   whiz about, whoosh, windrow, yap, yawp, yell, yelp, zip



The Jargon File (version 4.4.7, 29 Dec 2003):

buzz
 vi.

    1. Of a program, to run with no indication of progress and perhaps without
    guarantee of ever finishing; esp. said of programs thought to be executing
    tight loops of code. A program that is buzzing appears to be catatonic,
    but never gets out of catatonia, while a buzzing loop may eventually end of
    its own accord. ?The program buzzes for about 10 seconds trying to sort all
    the names into order.? See spin; see also grovel.

    2. [ETA Systems] To test a wire or printed circuit trace for continuity,
    esp. by applying an AC rather than DC signal. Some wire faults will pass DC
    tests but fail an AC buzz test.

    3. To process an array or list in sequence, doing the same thing to each
    element. ?This loop buzzes through the tz array looking for a terminator
    type.?


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

buzz

   1. Of a program, to run with no indication of progress and
   perhaps without guarantee of ever finishing; especially said
   of programs thought to be executing a tight loop of code.  A
   program that is buzzing appears to be catatonic, but never
   gets out of catatonia, while a buzzing loop may eventually end
   of its own accord.  "The program buzzes for about 10 seconds
   trying to sort all the names into order."  See spin; see
   also grovel.

   2. [ETA Systems] To test a wire or printed circuit trace for
   continuity by applying an AC rather than DC signal.  Some wire
   faults will pass DC tests but fail a buzz test.

   3. To process an array or list in sequence, doing the same
   thing to each element.  "This loop buzzes through the tz array
   looking for a terminator type."

   [Jargon File]