Definition of "keyway" in English

noun

1. (dentistry) A slot into which a precision attachment (a key) is fitted.

2. The whole deep way the key has to go, the hollow or cavity.

3. A guide groove.

4. (mechanical) The recessed part of a keyed joint, in which the key resides.

   • Near-synonyms: keyseat, groove

5. The groove within a modern lock that the key slides into; any lock's keyhole.