/ Thesaurus / C Synonyms of church key Find synonyms for: Noun1. church key, can opener, tin openerusage: can opener that has a triangular pointed end that pierces the tops of cansWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inane Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language