(1):

(a.) Full of gambols or tricks.

(2):

(v. t.) To adorn in a showy manner; to dress or equip ostentatiously; - often followed by up; as, to prank up the body. See Prink.

(3):

(v. i.) To make ostentatious show.

(4):

(n.) A gay or sportive action; a ludicrous, merry, or mischievous trick; a caper; a frolic.