Definition of lettuce

< Lettish

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let·tuce    (lts) KEY 

NOUN:

1. 1. Any of various plants of the genus Lactuca, especially L. sativa, cultivated for their edible leaves.
   2. The leaves of L. sativa, used especially in salads.
2. Slang Paper money.

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ETYMOLOGY:
Middle English lettuse, from Old French laitues, pl. of laitue, from Latin lactca, from lac, lact-, milk (from its milky juice); see melg- in Indo-European roots