n. a beer can opener designed to puncture a can, leaving a triangular hole; a bottle opener. (Older. No longer widely known, but still in use. One type of bottle opener is formed from metal following the outline of a large keyhole. This may have contributed to the origin of this term.) : Where is the church key when I need it?
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw-Hill Education.
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