The Collaborative International Dictionary of English v.0.48:

Crake \Crake\ (kr[=a]k), v. t. & i. [See Crack.]
   1. To cry out harshly and loudly, like the bird called crake.
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   2. To boast; to speak loudly and boastfully. [Obs.]
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            Each man may crake of that which was his own. --Mir.
                                                  for Mag.
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The Collaborative International Dictionary of English v.0.48:

Crake \Crake\, n.
   A boast. See Crack, n. [Obs.] --Spenser.
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The Collaborative International Dictionary of English v.0.48:

Crake \Crake\, n. [Cf. Icel. kr[=a]ka crow, kr[=a]kr raven, Sw.
   kr[*a]ka, Dan. krage; perh. of imitative origin. Cf. Crow.]
   (Zool.)
   Any species or rail of the genera Crex and Porzana; -- so
   called from its singular cry. See Corncrake.
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WordNet (r) 3.0 (2006):

crake
    n 1: any of several short-billed Old World rails