/ Thesaurus / R Synonyms of rhus copallina Find synonyms for: Noun1. dwarf sumac, mountain sumac, black sumac, shining sumac, Rhus copallina, sumac, sumach, shumacusage: common nonpoisonous shrub of eastern North America with compound leaves and green paniculate flowers followed by red berriesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language