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cup plant

American

noun

a hardy composite plant, Silphium perfoliatum, of eastern North America, having large yellow flower heads and opposite leaves that envelop the stem, forming a cup.

Etymology

Origin of cup plant

An Americanism dating back to 1840–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.