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

croak \croak\ kr=ok, v. i. imp.  p. p. croaked.
   kr=okt; p. pr.  vb. n. croaking. from the primitive
   of as. cracettan to croak as a raven; akin to g. kraumchzen
   to croak, and to e. creak, crake.
   1. to make a low, hoarse noise in the throat, as a frog, a
      raven, or a crow; hence, to make any hoarse, dismal sound.
      1913 webster

            loud thunder to its bottom shook the bog,
            and the hoarse nation croaked.        --pope.
      1913 webster

   2. to complain; especially, to grumble; to forebode evil; to
      utter complaints or forebodings habitually.
      1913 webster

            marat . . . croaks with reasonableness. --carlyle.
      1913 webster
see also:
croaked croaking 

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

croak \croak\, v. t.
   to utter in a low, hoarse voice; to announce by croaking; to
   forebode; as, to croak disaster.
   1913 webster

         the raven himself is hoarse,
         that croaks the fatal entrance of duncan. --shak.
   1913 webster

         two ravens now began to croak
         their nuptial song.                      --wordsworth.
   1913 webster

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

croak \croak\, n.
   the coarse, harsh sound uttered by a frog or a raven, or a
   like sound.
   1913 webster

[4] : WordNet (r) 2.0

croak
     n : a harsh hoarse utterance as of a frog syn: croaking
     v 1: die; "the old man finally kicked the bucket" syn: kick the
          bucket, cash in one's chips, buy the farm, conk,
          give-up the ghost, drop dead, pop off, choke, snuff
          it
     2: utter a hoarse sound, like a raven syn: cronk
     3: make complaining remarks or noises under one's breath; "she
        grumbles when she feels overworked" syn: murmur, mutter,
         grumble, gnarl
see also:
croaking kick the bucket cash in one's chips buy the farm conk give-up the ghost 
drop dead pop off choke snuff it cronk 
murmur mutter grumble gnarl 

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

186 moby thesaurus words for "croak":
   air a grievance, aphonia, apprehend, artificial voice, beef, belch,
   bellyache, bitch, blare, blast, blat, blot out, bode, bray,
   broken speech, broken tones, broken voice, bump off, burr, buy it,
   buzz, cackle, call, carol, cash in, caw, chatter, check in,
   check out, cheep, childish treble, chirk, chirp, chirr, chirrup,
   chitter, choked voice, chuck, clack, clamor, clang, clangor, clank,
   clash, cluck, cock-a-doodle-doo, complain, conk, coo, crab,
   cracked voice, craunch, cronk, crow, crump, crunch, cuckoo, die,
   do in, drawl, drop off, drum, dysarthria, dyslalia, dyslogia,
   dysphasia, dysphonia, dysphrasia, erase, expire, falsetto, fix,
   forebode, forewarn, fret, fret and fume, fuss, gabble, gaggle, get,
   give the business, go west, gobble, grind, gripe, groan, grouch,
   grouse, growl, grumble, grunt, guggle, gun down, harshness,
   have a premonition, have a presentiment, have it, hawking voice,
   hiss, hit, hoarseness, holler, honk, hoo, hoot, howl, ice,
   idioglossia, idiolalia, impairment of speech, jangle, jar, kick,
   kick in, kick off, kick the bucket, knock off, lay out, lisp,
   lisping, lodge a complaint, look black, loss of voice, lower,
   menace, mince, murmur, mutter, muzzy speech, nasal tone,
   nasalization, off, pass, pass away, pass out, peep, peg out, pip,
   pipe, pipe off, polish off, pop off, portend, preapprehend, quack,
   quarrel, quaver, raise a howl, rasp, register a complaint, roll,
   rub out, scold, scranch, scrape, scratch, scrunch, settle, shake,
   shove off, sibilation, sing, snarl, snore, speech defect,
   speech impediment, squawk, step off, take care of, take on,
   talk incoherently, threaten, tremor, trill, twang, tweet, twit,
   twitter, warble, warn, waste, whistle, wipe out, yap, yelp, zap

Croak >> C Words
Croak, definition of term: Croak
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