Alfalfa is a plant that's often grown to feed livestock. Hay is commonly made from the dried alfalfa plant.

Alfalfa is a flowering perennial, a plant that returns every year, although it's best known as food for dairy cattle and other livestock animals. When the plant is harvested and dried, it's often made into hay, and it's a popular feed because it's high in protein. If you're not a farmer, you may be most familiar with the sprouted form of alfalfa, which many people eat on salads. The word comes from an Arabic root, al-fisfisa, "fresh fodder."

Definitions of alfalfa
  1. noun
    important European leguminous forage plant with trifoliate leaves and blue-violet flowers grown widely as a pasture and hay crop
    synonyms: Medicago sativa, lucerne
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    type of:
    medic, medick, trefoil
    any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves
  2. noun
    leguminous plant grown for hay or forage
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    type of:
    coarse food (especially for livestock) composed of entire plants or the leaves and stalks of a cereal crop
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