What is the meaning of Croak?

A faint, harsh sound made in the throat.

The call of a frog or toad. (see also ribbit)

The harsh call of various birds, such as the raven or corncrake, or other creatures.

To make a croak.

To utter in a low, hoarse voice.

To make its sound.

To die.

To kill someone or something.

To complain; especially, to grumble; to forebode evil; to utter complaints or forebodings habitually.

To abort the current program indicating a user or caller error.

Source: wiktionary.org