The Collaborative International Dictionary of English v.0.48:

Prink \Prink\, v. i. [imp. & p. p. Prinked; p. pr. & vb. n.
   Prinking.] [Probably a nasalized form of prick. See
   Prick, v. t., and cf. Prig, Prank.]
   To dress or adjust one's self for show; to prank.
   [1913 Webster]