The noun rap has 6 senses (first 1 from tagged texts)
1. (1) blame, rap -- (a reproach for some lapse or misdeed; "he took the blame for it"; "it was a bum rap")
2. rap, strike, tap -- (a gentle blow)
3. pat, rap, tap -- (the sound made by a gentle blow)
4. rap -- (voluble conversation)
5. rap, rap music, hip-hop -- (genre of African-American music of the 1980s and 1990s in which rhyming lyrics are chanted to a musical accompaniment; several forms of rap have emerged)
6. knock, belt, rap, whack, whang -- (the act of hitting vigorously; "he gave the table a whack")
Overview of verb rap
The verb rap has 4 senses (first 1 from tagged texts)
1. (5) rap, knap -- (strike sharply; "rap him on the knuckles")
2. tap, rap, knock, pink -- (make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently")