Definition of

Croak

  1. (noun, communication) a harsh hoarse utterance (as of a frog)
  2. (verb, change) pass from physical life and lose all bodily attributes and functions necessary to sustain life
    The children perished in the fire
    The patient went peacefully
    The old guy kicked the bucket at the age of 102
  3. (verb, communication) make complaining remarks or noises under one's breath
  4. (verb, communication) utter a hoarse sound, like a raven

via WordNet, Princeton University

Origin of the word Croak

  1. c.1460, crouken, onomatopoeic or related to O.E. cracian (see crack). Slang meaning "to die" is first recorded 1812, from sound of death rattle. Croaker "prophet of evil" (1637) is from the raven (cf. M.E. crake "a raven," c.1320, from O.N. kraka "crow," of imitative origin). more

via Online Etymology Dictionary, ©2001 Douglas Harper

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