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|Noun||1.||genus Lactuca - an herb with milky juice: lettuce; prickly lettuce|
asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs
aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia
lettuce - any of various plants of the genus Lactuca
common lettuce, garden lettuce, Lactuca sativa - annual or perennial garden plant having succulent leaves used in salads; widely grown
cos lettuce, Lactuca sativa longifolia, romaine lettuce - lettuce with long dark-green spoon-shaped leaves