either of two large African antelopes (genus Connochaetes) with an oxlike head, horns that curve forward, and a horselike mane and tail; wildebeest
See gnu in American Heritage Dictionary 4
(no͞o, nyo͞o)
noun
Either of two large African antelopes (Connochaetes gnou or C. taurinus) having a drooping mane and beard, a long tufted tail, and curved horns in both sexes. Also called wildebeest.