tool

American  

[tool] / tul /

noun

1. an implement, especially one held in the hand, as a hammer, saw, or file, for performing or facilitating mechanical operations.

2. any instrument of manual operation.

3. the cutting or machining part of a lathe, planer, drill, or similar machine.

4. the machine itself; a machine tool.

5. anything used as a means of accomplishing a task or purpose.

   Education is a tool for success.

6. a person manipulated by another for the latter's own ends; cat's-paw.

7. the design or ornament impressed upon the cover of a book.

8. Underworld Slang.

   1. a pistol or gun.

   2. a pickpocket.

9. Slang: Vulgar. penis.

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verb (used with object)

1. to work or shape with a tool.

2. to work decoratively with a hand tool.

3. to ornament (the cover of a book) with a bookbinder's tool.

4. to drive (a vehicle).

   He tooled the car along the treacherous path.

5. to equip with tools or machinery.

verb (used without object)

1. to work with a tool.

2. to drive or ride in a vehicle.

   tooling along the freeway.

verb phrase

1. tool up to install machinery designed for performing a particular job.

   manufacturers tooling up for production.

tool British  

/ tuːl /

noun

1. 1. an implement, such as a hammer, saw, or spade, that is used by hand

   2. a power-driven instrument; machine tool

   3. ( in combination )

      a toolkit

2. the cutting part of such an instrument

3. 1. any of the instruments used by a bookbinder to impress a design on a book cover

   2. a design so impressed

4. anything used as a means of performing an operation or achieving an end

   he used his boss's absence as a tool for gaining influence

5. a person used to perform dishonourable or unpleasant tasks for another

6. a necessary medium for or adjunct to one's profession

   numbers are the tools of the mathematician's trade

7. slang another word for penis

8. an underworld slang word for gun

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verb

1. to work, cut, shape, or form (something) with a tool or tools

2. (tr) to decorate (a book cover) with a bookbinder's tool

3. to furnish with tools

4. to drive (a vehicle) or (of a vehicle) to be driven, esp in a leisurely or casual style

Usage

What are other ways to say tool? The word tool usually refers to a handheld object, such as a hammer, saw, or file, that is used to perform or facilitate mechanical operations. When should you use this noun over instrument, implement, or utensil? Learn more on Thesaurus.com. 

Other Word Forms

• multitool
  noun
• tool-less
  adjective
• tooler
  noun
• toolless
  adjective
• untooled
  adjective

Etymology

Origin of tool

First recorded before 900; Middle English (noun); Old English tōl; cognate with Old Norse tōl “tools”; akin to taw ²

Explanation

A tool is an instrument that you use to help you accomplish some task. If you are going to build a bookcase, you'll need the proper tools, like a saw, a drill, and a tape measure. A tool is also something that you use to perform the duties of a certain profession. The tools of a kindergarten teacher's trade include construction paper, glue sticks, and safety scissors. As a verb, tool can mean to drive aimlessly just for fun, the way you might tool around town in your convertible on a beautiful summer day.

Example Sentences

To investigate, the team used an open source simulation tool called AM3 to model realistic blazar populations.

From Science Daily • May 24, 2026

Prior to Kalshi and Polymarket’s exploding popularity, futures trading was a niche financial tool used in universities for experiments and specific industry actors.

From Salon • May 24, 2026

It’s a nice tool in theory, a way to pay attention to the other people on the call and not my Apple Notes interface.

From Slate • May 24, 2026

"We are using every tool at our disposal to find those responsible and encourage anyone with information to come forward."

From BBC • May 22, 2026

I pull out the calibration tool and jimmy it under the lower edge of the cover.

From "The Last Cuentista" by Donna Barba Higuera

Related Words

• apparatus
• appliance
• device
• engine
• gadget
• gizmo
• machine
• means
• mechanism
• utensil
• weapon