The Collaborative International Dictionary of English v.0.48:

Jimp \Jimp\, a. [Cf. Gimp, a.]
   1. Neat; handsome; elegant. See Gimp.
      [1913 Webster]

   2. Slender; trim.
      [PJC]

   2. Scant; barely enough. --RHUD
      [PJC]