1
a
: a hand tool consisting of a solid head set crosswise on a handle and used for pounding
b
: a power tool that often substitutes a metal block or a drill for the hammerhead
2
: something that resembles a hammer in form or action: such as
a
: a lever with a striking head for ringing a bell or striking a gong
b(1)
: an arm that strikes the cap in a percussion lock to ignite the propelling charge
(2)
: a part of the action of a modern gun that strikes the primer of the cartridge in firing or that strikes the firing pin to ignite the cartridge
c
d
: gavel
e(1)
: a padded mallet in a piano action for striking a string
(2)
: a hand mallet for playing on various percussion instruments (such as a xylophone)
3
: a metal sphere thrown for distance in the hammer throw
4

hammer

2 of 2

verb

hammered; hammering ˈha-mər-iŋ How to pronounce hammer (audio)
ˈham-riŋ

intransitive verb

1
: to strike blows especially repeatedly with or as if with a hammer : pound
2
: to make repeated efforts
especially : to reiterate an opinion or attitude
the lectures all hammered away at the same points

transitive verb

1
a
: to beat, drive, or shape with repeated blows of a hammer
b
: to fasten or build with a hammer
2
: to strike or drive with a force suggesting a hammer blow or repeated blows
hammered the ball over the fence
tried to hammer me into submission
3
: to criticize severely
Phrases
under the hammer
: for sale at auction

Examples of hammer in a Sentence

Verb He hammered the dent out of the fender. The carpenters were hammering all afternoon. The workers are hammering the studs to the frame.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Call for volunteers to clean park in fire zone faces pushback in Altadena Nonato laid his chisel against the mortar and gingerly began to tap the top of the tool with a hammer. Laura J. Nelson, Los Angeles Times, 18 Mar. 2025 The only problem was that Purdey had never made a hammer ejector gun in 28 gauge, or any hammer gun in .410 bore in their more than 200-year history. Chris Dorsey, Forbes, 17 Mar. 2025
Verb
The Infinite Blue gem, for example, hammered down for a cool $25 million at a Sotheby’s auction in 2023, slightly below its $26 million low estimate. Nicole Hoey, Robb Report, 19 Mar. 2025 Sensing an opening, Republicans are hammering Newsom for the rising costs of providing Medi-Cal coverage to undocumented immigrants. Dan Walters, The Mercury News, 19 Mar. 2025 See All Example Sentences for hammer

Word History

Etymology

Noun

Middle English hamer, from Old English hamor; akin to Old High German hamar hammer, and perhaps to Old Church Slavic kamen-, kamy stone, Greek akmē point, edge — more at edge

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1a

Verb

14th century, in the meaning defined at intransitive sense 1

Time Traveler
The first known use of hammer was before the 12th century

Cite this Entry

“Hammer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hammer. Accessed 24 Mar. 2025.

Kids Definition

hammer

1 of 2 noun
1
a
: a hand tool that consists of a solid head set crosswise on a handle and is used for pounding (as in driving nails)
b
: a power tool for pounding
2
: something that resembles a hammer in shape or action (as the part of a gun whose striking action causes explosion of the charge)
3
4
: a heavy metal ball with a flexible handle that is thrown for distance in a track-and-field contest

hammer

2 of 2 verb
1
: to strike blows with or as if with a hammer : pound
2
a
: to make repeated efforts
hammer away at one's lessons
b
: to emphasize (as an opinion) by repetition
hammers his point home
3
: to fasten, build, drive, or shape with a hammer

Medical Definition

More from Merriam-Webster on hammer

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