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Noun1.Bitis - a genus of ViperidaeBitis - a genus of Viperidae      
reptile genus - a genus of reptiles
family Viperidae, Viperidae - Old World vipers
Bitis arietans, puff adder - large African viper that inflates its body when alarmed
Bitis gabonica, gaboon viper - large heavy-bodied brilliantly marked and extremely venomous west African viper