[ kee-wey ]
/ ˈkiˌweɪ /


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.

Nearby words

  1. keystone kop,
  2. keystone species,
  3. keystone state,
  4. keystoner,
  5. keystroke,
  6. keyword,
  7. keyword indexing,
  8. keyword stuffing,
  9. keziah,
  10. kg

Origin of keyway

First recorded in 1865–70; key1 + way1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for keyway

British Dictionary definitions for keyway


/ (ˈkiːˌweɪ) /


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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012