Definition of "rose mallow" [rose mallow]

• A tall marsh plant (Hibiscus moscheutos) of eastern North America, having leaves covered with whitish down and large flowers with white, pink, or rose petals with crimson bases. (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.