n. 乐器；工具；仪器（instrument的复数）

n a device that requires skill for proper use

n the means whereby some act is accomplished

n a person used by another to gain an end

n (law) a document that states some contractual relationship or grants some right

n the semantic role of the entity (usually inanimate) that the agent uses to perform an action or start a process

n any of various devices or contrivances that can be used to produce musical tones or sounds

v equip with instruments for measuring, recording, or controlling

v write an instrumental score for

v address a legal document to