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pl.n. (used with a sing. or pl. verb)
A species of alumroot (Heuchera sanguinea) native to the southwest United States and Mexico, widely cultivated in gardens for its clusters of small, bell-shaped, red to white flowers.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.