CROAK
Source: 566, 567
croak. Croak, n. the cry of frog, raven or crow
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Croak (krōk), v. i. [imp. & p. p. Croaked. (krōkt); p. pr. & vb. n. Croaking.] [[From the primitive of AS. cracettan to croak as a raven; akin to G. krächzen to croak, and to E. creak, crake.]] 1. 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. 2. To complain; especially, to grumble; to forebode evil; to utter complaints or forebodings habitually.
Marat . . . croaks with reasonableness. Carlyle.