What is the meaning of keyed?

verb

• Identify as in botany or biology, for example.
  • synonyms: identify, discover, key, key out, distinguish, describe, name
• Provide with a key.
  • usage: "We were keyed after the locks were changed in the building"
  • synonyms: key
• Vandalize a car by scratching the sides with a key.
  • usage: "His new Mercedes was keyed last night in the parking lot"
  • synonyms: key
• Regulate the musical pitch of.
  • synonyms: key
• Harmonize with or adjust to.
  • usage: "key one's actions to the voters' prevailing attitude"
  • synonyms: key

adjective

• Fitted with or secured by a key.
  • usage: "a keyed instrument"; "the locks have not yet been keyed"
• Set to a key or tone. .