noun

• (uncountable) A plant, principally of Medicago sativa, grown as a pasture crop.
• (countable) A type or breed of this plant.
• An unincorporated community in Deschutes County, Oregon, United States
• An unincorporated community in Caddo County, Oklahoma, United States, originally named Boise.
• Short for Alfalfa County, Oklahoma. [One of 77 counties in Oklahoma, United States. County seat: Cherokee.]