(noun, verb)


1. a device that requires skill for proper use

Definition categories: man–made, device

2. the means whereby some act is accomplished

- my greed was the instrument of my destruction

Similar word(s): tool

Definition categories: act, agency, means, way

3. a person used by another to gain an end

Similar word(s): pawn

Definition categories: person, assistant, help, helper, supporter

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

Definition categories: communication, document, papers

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

Definition categories: communication

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

Definition categories: man–made, device

Sentences with instrument as a noun:

- The violinist was a master of her instrument.

- The instrument detected an increase in radioactivity.

- The dentist set down his tray of instruments. The scientist recorded the temperature with a thermometer but wished he had a more accurate instrument."

- A bond indenture is the instrument that gives a bond its value.

- Negotiable instruments are the foundation of the debt markets.


1. equip with instruments for measuring, recording, or controlling

Definition categories: possession, equip, fit, outfit

2. write an instrumental score for

Similar word(s): instrumentate

Definition categories: creation, compose, write

3. address a legal document to

Definition categories: communication, address, direct

Sentences with instrument as a verb:

- a sonata instrumented for orchestra