Source : Webster's Revised Unabridged Dictionary (1913)

Buzz \Buzz\, v. i. [imp. & p. p. {Buzzed}; 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.

         Like a wasp is buzzed, and stung him.    --Longfellow.

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

Buzz \Buzz\, v. t.
   1. To sound forth by buzzing. --Shak.

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

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

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

   4. (Phonetics) To sound with a ``buzz''. --H. Sweet.

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.

Source : WordNet®

buzz
     n 1: sound of rapid vibration; "the buzz of a bumble bee" [syn: {bombilation},
           {bombination}]
     2: a confusion of activity and gossip; "the buzz of excitement
        was so great that a formal denial was issued"

buzz
     v 1: make a buzzing sound; "bees were buzzing around the hive"
          [syn: {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}, {seethe}]
     4: call with a buzzer; "he buzzed the servant"

Source : Free On-Line Dictionary of Computing

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}]