Definition of "tick trefoil" []

• Any of various plants of the genus Desmodium, usually having trifoliolate compound leaves, racemes of small purplish or white flowers, and jointed seedpods with easily separable, one-seeded segments. (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.