/ Thesaurus / H Synonyms of horse chestnut Find synonyms for: Noun1. horse chestnut, buckeye, Aesculus hippocastanum, angiospermous tree, flowering treeusage: tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds2. buckeye, horse chestnut, conker, seedusage: the inedible nutlike seed of the horse chestnutWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language