'Keyed' definitions:

Definition of 'keyed'

From: WordNet
adjective
Fitted with or secured by a key; "a keyed instrument"; "the locks have not yet been keyed" [ant: keyless]
adjective
Set to a key or tone

Definition of 'Keyed'

From: GCIDE
  • Keyed \Keyed\ (k[=e]d), a. Furnished with keys; as, a keyed instrument; also, set to a key, as a tune. [1913 Webster]
  • Keyed bugle. See Kent bugle. [1913 Webster]