alfalfa

noun
🔊/ælˈfælfə/
🔊/ælˈfælfə/
[uncountable]
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  1. a plant with small divided leaves and purple flowers, grown as food for farm animals and as a salad vegetable紫(花)苜蓿;苜蓿Topics Foodc2
    Word Originmid 19th cent.: from Spanish, from Arabic al-faṣfaṣa, a green food for animals.