needlegrass
nounDefinition of needlegrass
1
: any of several grasses of the genus Stipa (especially S. comata) of the western U.S. with filiform leaves and slender awns on the spikelet
2
: any of several grasses of the genus Aristida (especially A. longiseta) of the western U.S. furnishing poor forage
— called also triple-awned grass