Home › Words › N › needlegrassneedlegrassneedlegrass means any of several genera of Poaceae grasses:; Achnatherum spp.EtymologyFrom needle + grass.nounAny of several genera of Poaceae grasses:; Achnatherum spp.Any of several genera of Poaceae grasses:; Aristida (threeawns)Any of several genera of Poaceae grasses:; HesperostipaAny of several genera of Poaceae grasses:; NassellaAny of several genera of Poaceae grasses:; Stipa (feathergrasses)Any of several genera of Poaceae grasses:; TriraphisDefinitions & examples from Wiktionary (CC BY-SA 3.0).