/ Dictionary / Index C church key: Meaning and Definition of Find definitions for: church' key" Pronunciation: [key] — Slang. Slang. a small metal can opener having a sharp triangular pointed end for punching holes in the top of a beverage can, as of beer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. church invisible churchless Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language