lettuce

noun

1. a cultivated plant, Lactuca sativa, occurring in many varieties and having succulent leaves used for salads.
2. any species of Lactuca.
3. Slang. U.S. dollar bills; greenbacks.

noun

1. any of various plants of the genus Lactuca, esp L. sativa, which is cultivated in many varieties for its large edible leaves: family Asteraceae (composites)
2. the leaves of any of these varieties, which are eaten in salads
3. any of various plants that resemble true lettuce, such as lamb’s lettuce and sea lettuce

n.late 13c., probably from Old French laitues, plural of laitue “lettuce,” from Latin lactuca “lettuce,” from lac (genitive lactis) “milk” (see lactation); so called for the milky juice of the plant.