Rave  —v. (-ving) 1 talk wildly or furiously in or as in delirium. 2 (usu. Foll. By about, over) speak with rapturous admiration; go into raptures. 3 colloq. Enjoy oneself freely (esp. Rave it up). —n. 1 (usu. Attrib.) Colloq. Highly enthusiastic review. 2 (also rave-up) colloq. Lively party. 3 slang craze. [probably french dial. Raver]