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

Synonyms of break-in

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
The Hoka Kawana 2 proved best for training thanks to its cloud-like insoles, strong support, and zero break-in period. Toni Sutton, PEOPLE, 9 Nov. 2025 The charge the adult break-in suspect faces, breaking and entering, is a felony punishable by up to 10 years in prison. Darcie Moran, Freep.com, 7 Nov. 2025
Verb
In cable news, stories break in remote places where NBC affiliates traditionally had been the go-to suppliers of footage and reporters on the ground. Dade Hayes, Deadline, 14 Nov. 2025 Unseasonably warm weather is sweeping across the Central United States this week, causing daily record high temperatures to be broken in Lubbock, Texas. Anna Skinner, MSNBC Newsweek, 14 Nov. 2025 See All Example Sentences for break-in

Word History

First Known Use

Noun

1807, in the meaning defined at sense 1

Verb

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

Time Traveler
The first known use of break-in was in the 14th century

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 16 Nov. 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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