The Collaborative International Dictionary of English v.0.48:
Aepyceros \Aepyceros\ n. 1. 1 African antelopes: impalas. Syn: genus Aepyceros [WordNet 1.5]WordNet (r) 3.0 (2006):
Aepyceros n 1: African antelopes: impalas [syn: Aepyceros, genus Aepyceros]