break-in

1 of 2

noun

1
: the act or action of breaking in
a rash of break-ins at the new apartment house
2
: a performance or a series of performances serving as a trial run
3
: an initial period of operation during which working parts begin to function efficiently

break in

2 of 2

verb

broke in; broken in; breaking in; breaks in

intransitive verb

1
: to enter something (such as a building or computer system) without consent or by force
2
a
: intrude
break in upon his privacy
b
: to interrupt a conversation
3
: to start in an activity or enterprise
breaking in as a cub reporter

transitive verb

1
: to accustom to a certain activity or occurrence
break in the new clerk
2
: to overcome the stiffness or newness of
break in a pair of shoes

Examples of break-in in a Sentence

Verb the burglars broke in by smashing a window he rudely broke in to drop the names of several celebrities that he had met
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
Palestine Action staged break-ins at Elbit sites across the U.K. last year in the city of Bristol, and at a factory in the county of Kent, where around £1 million ($1.33 million) worth of property was reportedly destroyed. Callum Sutherland, Time, 5 Aug. 2025 In a June 2025 Zoom meeting — less than a month before the July 10 break-in — the American Idol executive shared her most recent scare. Emily Blackwood, People.com, 1 Aug. 2025
Verb
At the time, the burglars allegedly smashed a glass door or window to break in before ransacking the home and fleeing, police sources told NBC News, ABC News and TMZ. Charna Flam, People.com, 12 Aug. 2025 To illustrate the danger of a break in a natural gas line, crews from San Diego Fire-Rescue and SDG&E hosted a demonstration Monday morning at the utility’s training center in Mission Valley. Rob Nikolewski, San Diego Union-Tribune, 11 Aug. 2025 See All Example Sentences for break-in

Word History

First Known Use

Noun

1856, in the meaning defined at sense 1

Verb

circa 1535, in the meaning defined at intransitive sense 1

Time Traveler
The first known use of break-in was circa 1535

Browse Nearby Words

See all Nearby Words

Cite this Entry

“Break-in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/break-in. Accessed 19 Aug. 2025.

Kids Definition

break-in

1 of 2 noun
ˈbrā-ˌkin
: an act or instance of breaking in

break in

2 of 2 verb
(ˈ)brā-ˈkin
1
: to enter a house or building by force
2
a
: to make used to an activity
breaking in a new employee
b
: to overcome the newness or stiffness of
breaking in a new pair of shoes

Legal Definition

break-in

1 of 2 noun
ˈbrāk-ˌin
: the act or action of breaking in

break in

2 of 2 intransitive verb
: to enter something (as a building or computer system) without privilege (as consent) or by force

More from Merriam-Webster on break-in

Last Updated: - Updated example sentences
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