Croak

Webster's Dictionary of the English Language

·noun The coarse, harsh sound uttered by a frog or a raven, or a like sound.

II. Croak ·vi To make a low, hoarse noise in the throat, as a frog, a raven, or a crow; hence, to make any hoarse, dismal sound.

III. Croak ·vt To utter in a low, hoarse voice; to announce by croaking; to Forebode; as, to croak disaster.

IV. Croak ·vi To Complain; especially, to grumble; to forebode evil; to utter complaints or forebodings habitually.