The Collaborative International Dictionary of English v.0.48:

Prank \Prank\, v. t. [imp. & p. p. Pranked; p. pr. & vb. n.
   Pranking.] [Cf. E. prink, also G. prangen, prunken, to
   shine, to make a show, Dan. prange, prunke, Sw. prunka, D.
   pronken.]
   To adorn in a showy manner; to dress or equip ostentatiously;
   -- often followed by up; as, to prank up the body. See
   Prink.
   [1913 Webster]

         In sumptuous tire she joyed herself to prank.
                                                  --Spenser.
   [1913 Webster]