1. [n]  the act of hitting vigorously; "he gave the table a whack"
2. [n]  a reproach for some lapse or misdeed; "he took the blame for it"; "it was a bum rap"
3. [n]  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
4. [n]  (informal) voluble conversation
5. [n]  the sound made by a gentle blow
6. [n]  a gentle blow
7. [v]  talk volubly
8. [v]  strike sharply; "rap him on the knuckles"
9. [v]  perform rap music
10. [v]  make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently"

Rap
Rap

more details ...

1. \Rap\, n. [Etymol. uncertain.]
   A lay or skein containing 120 yards of yarn. --Knight.
   

2. \Rap\, v. i. [imp. & p. p. {Rapped}; p. pr. & vb. n.
   {Rapping}.] [Akin to Sw. rappa to strike, rapp stroke, Dan.
   rap, perhaps of imitative origin.]
   To strike with a quick, sharp blow; to knock; as, to rap on
   the door.
   

3. \Rap\, v. t.
   1. To strike with a quick blow; to knock on.
            With one great peal they rap the door. --Prior.
   2. (Founding) To free (a pattern) in a mold by light blows on
      the pattern, so as to facilitate its removal.
   

4. \Rap\, n.
   A quick, smart blow; a knock.
   

5. \Rap\, v. t. [imp. & p. p. {Rapped}, usually written {Rapt};
   p. pr. & vb. n. {Rapping}.] [OE. rapen; akin to LG. & D.
   rapen to snatch, G. raffen, Sw. rappa; cf. Dan. rappe sig to
   make haste, and Icel. hrapa to fall, to rush, hurry. The word
   has been confused with L. rapere to seize. Cf. {Rape}
   robbery, {Rapture}, {Raff}, v., {Ramp}, v.]
   1. To snatch away; to seize and hurry off.
            And through the Greeks and Ilians they rapt The
            whirring chariot.                     --Chapman.
            From Oxford I was rapt by my nephew, Sir Edmund
            Bacon, to Redgrove.                   --Sir H.
                                                  Wotton.
   2. To hasten. [Obs.] --Piers Plowman.
   3. To seize and bear away, as the mind or thoughts; to
      transport out of one's self; to affect with ecstasy or
      rapture; as, rapt into admiration.
            I'm rapt with joy to see my Marcia's tears.
                                                  --Addison.
            Rapt into future times, the bard begun. --Pope.
   4. To exchange; to truck. [Obs. & Law]
   {To rap and ren}, {To rap and rend}. [Perhaps fr. Icel. hrapa
      to hurry and r[ae]na plunder, fr. r[=a]n plunder, E. ran.]
      To seize and plunder; to snatch by violence. --Dryden.
      ``[Ye] waste all that ye may rape and renne.'' --Chaucer.
            All they could rap and rend pilfer.   --Hudibras.
   {To rap out}, to utter with sudden violence, as an oath.
            A judge who rapped out a great oath.  --Addison.
   

6. \Rap\, n. [Perhaps contr. fr. raparee.]
   A popular name for any of the tokens that passed current for
   a half-penny in Ireland in the early part of the eighteenth
   century; any coin of trifling value.
         Many counterfeits passed about under the name of raps.
                                                  --Swift.
         Tie it [her money] up so tight that you can't touch a
         rap,
         save with her consent.                   --Mrs.
                                                  Alexander.
   {Not to care a rap}, to care nothing.
   {Not worth a rap}, worth nothing.