/ Thesaurus / O Synonyms of oyster crab Find synonyms for: Noun1. oyster crab, Pinnotheres ostreum, pea crabusage: tiny soft-bodied crab living within the mantle cavity of oystersWordNet 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