keyed (Adjective) — Fitted with or secured by a key. ex. "a keyed instrument" ex. "the locks have not yet been keyed"
keyed (Adjective) — Set to a key or tone.
keyed (Verb) — Classify or apply the appropriate name to, e.g. in botany or biology.
keyed (Verb) — Provide with a key. ex. "We were keyed after the locks were changed in the building"
keyed (Verb) — Vandalize a car by scratching the sides with a key. ex. "His new Mercedes was keyed last night in the parking lot"
keyed (Verb) — (music) regulate the musical pitch of.
keyed (Verb) — Harmonize with or adjust to. ex. "key one's actions to the voters' prevailing attitude"