instrument

Definition (noun): a device that requires skill for proper use

Definition (noun): the means whereby some act is accomplished

Example: my greed was the instrument of my destruction

Definition (noun): the means whereby some act is accomplished

Example: science has given us new tools to fight disease

Definition (noun): a person used by another to gain an end

Definition (noun): (law) a document that states some contractual relationship or grants some right

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

Definition (noun): any of various devices or contrivances that can be used to produce musical tones or sounds

Definition (verb): equip with instruments for measuring, recording, or controlling

Definition (verb): write an instrumental score for

Definition (verb): address a legal document to