CROAK (2)
Source: 566, 567
croak (2). Croak, v.i. to cry like a frog, raven or crow, to growl
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Croak, v. t. 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.