pin grass

n : 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 pinlike fruits that stick straight up; often

grown for forage [syn: {redstem storksbill}, {alfilaria},

{alfileria}, {filaree}, {filaria}, {clocks}, {pin clover},

{Erodium cicutarium}]