/ Thesaurus / R Synonyms of rock crab Find synonyms for: Noun1. rock crab, Cancer irroratus, crabusage: crab of eastern coast of North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: coincidence Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language