The Collaborative International Dictionary of English v.0.48:

Rap \Rap\, v. t. [imp. & p. p. Rapped (r[a^]pt), 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.
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            And through the Greeks and Ilians they rapt
            The whirring chariot.                 --Chapman.
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            From Oxford I was rapt by my nephew, Sir Edmund
            Bacon, to Redgrove.                   --Sir H.
                                                  Wotton.
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   2. To hasten. [Obs.] --Piers Plowman.
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   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.
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            I'm rapt with joy to see my Marcia's tears.
                                                  --Addison.
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            Rapt into future times, the bard begun. --Pope.
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   4. To exchange; to truck. [Obs. & Low]
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   5. To engage in a discussion, converse.
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   6. (ca. 1985) to perform a type of rhythmic talking, often
      with accompanying rhythm instruments. It is considered by
      some as a type of music; see rap music.
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   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.
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            All they could rap and rend and pilfer. --Hudibras.
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   To rap out, to utter with sudden violence, as an oath.
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            A judge who rapped out a great oath.  --Addison.
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