The Collaborative International Dictionary of English v.0.48:

Madoqua \Ma"do*qua\, n. (Zool.)
   A small Abyssinian antelope (Neotragus Saltiana), about the
   size of a hare.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Madoqua
    n 1: genus comprising some small antelopes of eastern and
         northeastern Africa [syn: Madoqua, genus Madoqua]