A keyhole (or keyway) is a hole or aperture (as in a door or lock) for receiving a key. Lock keyway shapes vary widely with lock manufacturer, and many manufacturers have a number of unique profiles requiring a specifically milled key blank to engage the lock's tumblers.
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- ↑ Gove, Philip Babcock, ed. (1981). "keyhole". Webster's Third New International Dictionary of English Language. Merriam-Webster Inc. p. 1239.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>