impala

from WordNet (r) 3.0 (2006)

impala
    n 1: African antelope with ridged curved horns; moves with
         enormous leaps [syn: {impala}, {Aepyceros melampus}]

from The Collaborative International Dictionary of English v.0.48

impala \im*pa"la\, n.
   An antelope ({Aepyceros melampus}) of Southeastern Africa,
   the male of which has ringed lyre-shaped horns, which curve
   first backward, then sideways, then upwards. ALso called
   {impalla} and {pallah}.
   [PJC]