1. Bot. A composite plant of the genus Lactuca (Lactuca 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 Lactuca Canadensis.
Hare's lettuce, Lamb's lettuce. See under Hare, and Lamb.
Lettuce opium. See Lactucarium.
Sea lettuce, certain papery green seaweeds of the genus Ulva.
n 1: informal terms for money [syn: boodle, bread, cabbage,
clams, dinero, dough, gelt, kale, lolly, lucre,
loot, moolah, pelf, scratch, shekels, simoleons,
2: any of various plants of the genus Lactuca
3: leaves of any of various plants of Lactuca sativa