Rap1  —n. 1 smart slight blow. 2 knock, sharp tapping sound. 3 slang blame, punishment. 4 a rhythmic monologue recited to music. B (in full rap music) style of rock music with words recited. —v. (-pp-) 1 strike smartly. 2 knock; make a sharp tapping sound. 3 criticize adversely. 4 perform a rap.  take the rap suffer the consequences.  rapper n. [probably imitative]