Definition of "lettuce" []

• Any of various plants of the genus Lactuca, especially L. sativa, cultivated for their edible leaves. (noun)
• The leaves of L. sativa, used especially in salads. (noun)
• Slang Paper money. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There are numerous varieties of lettuce, but these may be reduced to the two kinds shown in Fig. 2, _leaf lettuce_ on the right and _head lettuce_ on the left."
• "Yes, with the help of the mighty 6-pack, I should be eating fresh lettuce from the garden next week."
• "Or order the dish you wrap in lettuce before eating?"