noun
or al·fil·e·ria also al·fil·e·ri·lla (ˈ)alˌfiləˈrēə
( -s )
Etymology: modification of American Spanish alfilerillo, from Spanish diminutive of alfiler pin, modification of Arabic al-khilāl the thorn, the pin
: a European weed ( Erodium cicutarium ) grown for forage in the dry regions of the southwestern U.S. — called also pin grass