n.
Pronunciation: ' le-t ə s
Function: noun
Etymology: Middle English letuse, from Anglo-French letuse, probably from plural of letue lettuce plant, from Latin lactuca, from lact-, lac milk; from its milky juice ― more at GALAXY
Date: 14th century
: any of a genus ( Lactuca ) of composite plants especially : a common garden vegetable ( L. sativa ) whose succulent leaves are used especially in salads