Synonyms for instrument

verb

• write an instrumental score for
• address a legal document to
• equip with instruments for measuring, recording, or controlling

noun

• any of various devices or contrivances that can be used to produce musical tones or sounds
• the means whereby some act is accomplished
• a person used by another to gain an end
• (law) a document that states some contractual relationship or grants some right
• the semantic role of the entity (usually inanimate) that the agent uses to perform an action or start a process
• a device that requires skill for proper use