/ Thesaurus / P Synonyms of poison dogwood Find synonyms for: Noun1. poison ash, poison dogwood, poison sumac, Toxicodendron vernix, Rhus vernix, poisonous plantusage: smooth American swamp shrub with pinnate leaves and greenish flowers followed by greenish white berries; yields an irritating oilWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language