instrument

write an instrumental score for

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

the means whereby some act is accomplished

“my greed was the instrument of my destruction”

a person used by another to gain an end

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

address a legal document to

a device that requires skill for proper use

equip with instruments for measuring, recording, or controlling