2 definitions found From WordNet (r) 2.0 [wn]: wildebeest noun: large African antelope having a head with horns like an ox and a long tufted tail [syn: {gnu}] From The Collaborative International Dictionary of English v.0.44 [gcide]: Wildebeest \Wilde"beest'\, noun [D. wild wild + beeste beast.] (Zo["o]l.) The gnu.

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