1 knock, strike, tap, hit:
The policeman rapped smartly at the door with his truncheon.
2 criticize, rebuke, scold, reprimand, rap over the knuckles, Colloq knock, Brit tick off:
We were severely rapped for dropping litter on the pavement.
3 converse, talk, chat, gossip, Colloq gab, Slang chew the fat or the rag:
That guy was so fascinating - we could rap with him for hours.
4 knock, tap, hit, blow, crack, stroke, cuff, whack, thwack, punch, Colloq belt, clout, Slang sock, slug, biff:
The punishment for failing to complete the assignment was a severe rap on the knuckles
5 conversation, discussion, chat, confabulation, talk, dialogue, discourse, colloquy, Colloq confab, Slang chiefly US and Canadian bull session, rap session:
We used to get together for a nice long rap now and then.
6 responsibility, blame; punishment, sentence; charge, accusation, indictment:
Why should he have to take the rap for something you did? The witness failed to show up, so Baxter beat the rap.