Any of various plants of the genera Trifolium, Lotus, and related genera of the pea family, having compound trifoliate leaves.
An ornament, symbol, or architectural form having the appearance of a trifoliate leaf.
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.