noun
1.
a. : a weedy lettuce that is an escape from a cultivated strain
b. : any of several native wild plants of the genus Lactuca: as
(1) : prickly lettuce
(2) : a blue lettuce ( L. pulchella )
(3) : a tall No. American herb ( L. canadensis ) that resembles prickly lettuce but lacks spines
2. : false wintergreen