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]