/ Thesaurus / E Synonyms of edible sea urchin Find synonyms for: Noun1. edible sea urchin, Echinus esculentus, sea urchinusage: a sea urchin that can be eatenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language