/ Thesaurus / J Synonyms of jonah crab Find synonyms for: Noun1. Jonah crab, Cancer borealis, crabusage: large red deep-water crab of the eastern coast of North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language