[1] : The Collaborative International Dictionary of English v.0.48

honk \honk\ ho^ngk, n. of imitative origin. zool.
   the cry of a wild goose. -- honk"ing, n.
   1913 webster
see also:
honk"ing 

[2] : The Collaborative International Dictionary of English v.0.48

honk \honk\ ho^ngk, n.
   1. to make a sound like the honk of a goose.
      pjc

   2. specifically: to sound the horn on an automobile or other
      motor vehicle.
      pjc

[3] : WordNet (r) 2.0

honk
     n : the cry of a goose or any sound resembling this
     v 1: make a loud noise; "the horns of the taxis blared" syn: blare,
           beep, claxon, toot
     2: use the horn of a car syn: claxon
     3: cry like a goose; "the geese were honking" syn: cronk
     4: eject the contents of the stomach through the mouth; "after
        drinking too much, the students vomited"; "he purged
        continuously"; "the patient regurgitated the food we gave
        him last night" syn: vomit, vomit up, purge, cast,
         sick, cat, be sick, disgorge, regorge, retch,
         puke, barf, spew, spue, chuck, upchuck, regurgitate,
         throw up ant: keep down
see also:
blare beep claxon toot cronk vomit 
vomit up purge cast sick cat 
be sick disgorge regorge retch puke 
barf spew spue chuck upchuck 
regurgitate throw up keep down 

[4] : Moby Thesaurus II by Grady Ward, 1.0

72 moby thesaurus words for "honk":
   bay, beep, bell, blare, blast, blat, blow, blow the horn, bray,
   bugle, cackle, call, carol, caw, chatter, cheep, chirk, chirp,
   chirr, chirrup, chitter, chuck, clack, clarion, cluck,
   cock-a-doodle-doo, coo, croak, cronk, crow, cuckoo, drum, fanfare,
   flourish of trumpets, gabble, gaggle, gobble, guggle, hoo, hoot,
   peal, peep, pip, pipe, quack, roll, scold, shriek, sing, sound,
   sound a tattoo, sound taps, squawk, squeal, tantara, tantarara,
   taps, tarantara, tattoo, toot, tootle, trill, trumpet,
   trumpet blast, trumpet call, tweedle, tweet, twit, twitter, warble,
   whistle, wind

Honk >> H Words
Honk, definition of term: Honk
honk_pag1.html