from
The Collaborative International Dictionary of English v.0.48
Croak \Croak\ (kr[=o]k), v. i. [imp. & p. p. {Croaked}.
(kr[=o]kt); p. pr. & vb. n. {Croaking}.] [From the primitive
of AS. cracettan to croak as a raven; akin to G. kr[aum]chzen
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]