pin grass

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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
• Syn:
redstem storksbill, alfilaria, alfileria, filaree, filaria,
clocks, pin clover, Erodium cicutarium
• Hypernyms:
storksbill, heron's bill