/ Thesaurus / H Synonyms of hedgehog cactus Find synonyms for: Noun1. hedgehog cactus, echinocactus, barrel cactususage: cactus of the genus Echinocactus having stout sharp spinesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language