Definition of prank

• 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.
• v. i. - To make ostentatious show.
• n. - A gay or sportive action; a ludicrous, merry, or mischievous trick; a caper; a frolic.
• a. - Full of gambols or tricks.