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]

The Collaborative International Dictionary of English v.0.48:

Pimping \Pimp"ing\, a. [Cf. G. pimpelig, pimpelnd, sickly,
   weak.]
   1. Little; petty; pitiful. [Obs.] --Crabbe.
      [1913 Webster]

   2. Puny; sickly. [Local, U.S.]
      [1913 Webster]