The Collaborative International Dictionary of English v.0.48:

Crunk \Crunk\ (kr[u^][ng]k), Crunkle \Crun"kle\
   (kr[u^][ng]"k'l), v. i. [Cf. Icel. kr?nka to croak.]
   To cry like a crane. [Obs.] "The crane crunketh." --Withals
   (1608).
   [1913 Webster]