/ Thesaurus / P Synonyms of parsley haw Find synonyms for: Noun1. parsley haw, parsley-leaved thorn, Crataegus apiifolia, Crataegus marshallii, hawthorn, hawusage: southern United States hawthorn with pinnately lobed leavesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language