CROAK
croak, croaking
(noun) a harsh hoarse utterance (as of a frog)
die, decease, perish, go, exit, pass away, expire, pass, kick the bucket, cash in one's chips, buy the farm, conk, give-up the ghost, drop dead, pop off, choke, croak, snuff it
(verb) pass from physical life and lose all bodily attributes and functions necessary to sustain life; “She died from cancer”; “The children perished in the fire”; “The patient went peacefully”; “The old guy kicked the bucket at the age of 102”
murmur, mutter, grumble, croak, gnarl
(verb) make complaining remarks or noises under one’s breath; “she grumbles when she feels overworked”
croak, cronk
(verb) utter a hoarse sound, like a raven
Source: WordNet® 3.1
Etymology
Noun
croak (plural croaks)
A faint, harsh sound made in the throat.
The cry of a frog or toad. (see also ribbit)
The harsh cry of various birds, such as the raven or corncrake, or other creatures.
Verb
croak (third-person singular simple present croaks, present participle croaking, simple past and past participle croaked)
(intransitive) To make a croak.
(transitive) To utter in a low, hoarse voice.
(intransitive, of a frog, toad, raven, or various other birds or animals) To make its cry.
(slang) To die.
(transitive, slang) To kill someone or something.
To complain; especially, to grumble; to forebode evil; to utter complaints or forebodings habitually.
Source: Wiktionary
Croak (krk), v. i. [imp. & p. p. Croaked. (krp. pr. & vb. n.
Croaking.] Etym: [From the primitive of AS. cracettan to croak as a
raven; akin to G. kr 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.
Loud thunder to its bottom shook the bog, And the hoarse nation
croaked. Pope.
2. To complain; especially, to grumble; to forebode evil; to utter
complaints or forebodings habitually.
Marat . . . croaks with reasonableness. Carlyle.
Croak, v. t.
Definition: To utter in a low, hoarse voice; to announce by croaking; to
forebode; as, to croak disaster.
The raven himself is hoarse, That croaks the fatal entrance of
Duncan. Shak.
Two ravens now began to croak Their nuptial song. Wordsworth.
Croak, n.
Definition: The coarse, harsh sound uttered by a frog or a raven, or a like
sound.
Source: Webster’s Unabridged Dictionary 1913 Edition