The Collaborative International Dictionary of English v.0.48:

Pimp \Pimp\ (p[i^]mp), n. [Cf. F. pimpant smart, sparkish; perh.
   akin to piper to pipe, formerly also, to excel. Cf. Pipe.]
   One who provides gratification for the lust of others; a
   procurer; a pander. --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pimp \Pimp\, v. i. [imp. & p. p. Pimped (p[i^]mt; 215); p. pr.
   & vb. n. Pimping.]
   To procure women for the gratification of others' lusts; to
   pander. --Dryden.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pimp
    n 1: someone who procures customers for whores (in England they
         call a pimp a ponce) [syn: pimp, procurer, panderer,
         pander, pandar, fancy man, ponce]
    v 1: arrange for sexual partners for others [syn: pander,
         pimp, procure]