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

Example Sentences

The AI tool is pitched as a chief financial officer for individual investors, syncing with their bank and brokerage accounts to monitor portfolios and weigh in.

From The Wall Street Journal • Apr. 7, 2026

"If this kind of science can help identify where trafficked animals have been taken from, it becomes a powerful tool in the fight against wildlife crime," Lovatt added.

From BBC • Apr. 7, 2026

That might include, she further fantasizes, a technology tool you don’t even notice but that focuses your attention to sound vibrations the way glasses give clarity to blurry vision.

From Los Angeles Times • Apr. 7, 2026

Following last year’s tax season, H&R Block said AI Tax Assist, its AI tool for DIY tax filers, increased the conversion rate among new clients by 13 percentage points.

From Barron's • Apr. 6, 2026

I reached out and touched the end of a muddy wooden stick, a digging tool of some kind, sitting next to a small wooden hoe beside me on the boat.

From "Summer of the Mariposas" by Guadalupe García McCall

Related Words

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