- Machinery. a groove in a shaft, the hub of a wheel, etc., for receiving part of a key holding it to another part.
- a slot in a lock for receiving and guiding the key.
- (in poured-concrete construction) a longitudinal groove in a footing, or in a pour that has set, providing a key for newly poured concrete.
- a depression or slot carved into rock to provide a bond or anchorage for a structure, as a dam.
Origin of keyway
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for keyway
The sides and bottom of the keyway should be surfaced true with the file.
This head is also driven by a key which engages a keyway in the boring-bar.Turning and Boring
Franklin D. Jones
The flat key is used where it is necessary to secure the wheel more firmly without weakening the shaft by cutting a keyway in it.
This causes the pin to catch in the front end of the keyway and the sleeve is again locked.
The sleeve now stands still, the die cuts the thread and pulls the turret along by the friction of the pin in the keyway.
- a longitudinal slot cut into a component to accept a key that engages with a similar slot on a mating component to prevent relative motion of the two components