Noun: pin grass pin grãs
- European weed naturalized in southwestern United States and Mexico having reddish decumbent stems with small fernlike leaves and small deep reddish-lavender flowers followed by slender fruits that stick straight up; often grown for forage
"Cattle grazed on the abundant pin grass in the pasture";
- redstem storksbill, alfilaria, alfileria, filaree, filaria, pin clover, Erodium cicutarium
Derived forms: pin grasses
Type of: heron's bill, storksbill