Noun
A composite plant of the genus Lactuca (L. sativa), the leaves of which are used as salad. Plants of this genus yield a milky juice, from which lactucarium is obtained. The commonest wild lettuce of the United States is L. Canadensis.
Source: Webster's dictionaryLettuce is like conversation; it must be fresh and crisp, so sparkling that you scarcely notice the bitter in it. Charles Dudley Warner
I care not who hoes the lettuce of my country if I can eat the salad! F. Scott Fitzgerald
I don't want you to get the wrong idea, not all liberals smoke lettuce. Tré Cool
What! give the lettuce in charge to the geese! Danish Proverb
Like lips, like lettuce. Italian Proverb
The gardener's dog does not eat lettuce and will not let others eat it. Italian Proverb