Keyway

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A slot into which a precision attachment (a key) is fitted.
  2. 2
    The whole deep way the key has to go, the hollow or cavity.
  3. 3
    A guide groove.
  4. 4
    The recessed part of a keyed joint, in which the key resides.

    "Near-synonyms: keyseat, groove"

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

Etymology

From key + way.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.