#1 old maid n. an elderly unmarried woman. wn
#2 old maid n. any of various plants of the genus Zinnia cultivated for their variously and brightly colored flower heads. wn
#3 old maid n. commonly cultivated Old World woody herb having large pinkish to red flowers. wn
#4 old maid n. the loser in a game of old maid. wn
#5 old maid n. a card game using a pack of cards from which one queen has been removed; players match cards and the player holding the unmatched queen at the end of the game is the loser (or 'old maid'). wn
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