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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 …

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  1. n. 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.
  2. n. informal terms for money
  3. n. any of various plants of the genus Lactuca
  4. n. leaves of any of various plants of Lactuca sativa
  5. 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. 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.
  6. A composite plant of the genus Lactuca (L. sativa), the leavesof which are used as salad. Plants of this genus yield a milky juice,from which lactucarium is obtained. The commonest wild lettuce of theUnited States is L. Canadensis. Hare's lettuce, Lamb's lettuce. Seeunder Hare, and Lamb.-- Lettuce opium. See Lactucarium.-- Sea lettuce, certain papery green seaweeds of the genus Ulva.
  7. n:100 n. any of various plants of the genus Lactuca n. leaves of any of various plants of Lactuca sativa