run-in

1 of 2

noun

Synonyms of run-innext
1
British : the final part of a race or racetrack
2
3
: something inserted as a substantial addition in copy or typeset matter

run in

2 of 2

verb

ran in; run in; running in; runs in

transitive verb

1
a
: to insert as additional matter
b
: to make (typeset matter) continuous without a paragraph or other break
2
somewhat old-fashioned : to arrest for a usually minor offense
3
chiefly British : to break in (a new machine) gradually by careful operation

intransitive verb

: to pay a casual visit

Examples of run-in in a Sentence

Noun the rival gangs had a bit of a run-in last night Verb I just thought I'd run in and pick up my package. if we catch you shoplifting again, we're going to run you in
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
This isn't the first time Paul has had a run-in with the law. Christina Dugan Ramirez, FOXNews.com, 17 Mar. 2026 First, laying eggs, and now, a run-in with some wild animals was caught on camera. Lauren Linder, CBS News, 16 Mar. 2026
Verb
Four Republicans are also running in Tuesday's primary, but a Republican hasn't won in the district since 2010. Todd Feurer, CBS News, 18 Mar. 2026 Also running in the general election are Republican nominee Lupe Castillo and Ed Hershey, the candidate for the Working Class Party. Alice Yin, Chicago Tribune, 18 Mar. 2026 See All Example Sentences for run-in

Word History

First Known Use

Noun

1799, in the meaning defined at sense 1

Verb

1888, in the meaning defined at sense 1b

Time Traveler
The first known use of run-in was in 1799

Browse Nearby Words

Cite this Entry

“Run-in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/run-in. Accessed 22 Mar. 2026.

Kids Definition

run-in

noun
ˈrən-ˌin
: an angry dispute : quarrel

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