gnu

n. [ Hottentot gnu, or nju: cf. F. gnou. ] (Zool.) One of two species of large South African antelopes of the genus Catoblephas, having a mane and bushy tail, and curved horns in both sexes. [ Written also gnoo. ] [ 1913 Webster ]

☞ The common gnu or wildebeest (Catoblephas gnu) is plain brown; the brindled gnu or blue wildebeest (C. gorgon) is larger, with transverse stripes of black on the neck and shoulders. [ 1913 Webster ]