Definition of lentil noun from the Oxford Advanced Learner's Dictionary

 

lentil

 noun
noun
BrE BrE//ˈlentl//
 
; NAmE NAmE//ˈlentl//
 
 
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a small green, orange or brown seed that is usually dried and used in cooking, for example in soup or stew Word Origin Middle English: from Old French lentille, from Latin lenticula, diminutive of lens, lent- ‘lentil’.
See the Oxford Advanced American Dictionary entry: lentil