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.
— synonyms: redstem_storksbill, alfilaria, alfileria, filaree, clocks, pin_grass, pin_clover, Erodium_cicutarium
noun slender threadlike roundworms living in the blood and tissues of vertebrates.