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run-in

1 of 2

noun

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
Other unusual items she's found include a Merrimack College professor’s name badge and a cloth label with a name and number that turned out to be from someone who had previous run-ins with the law. David Chiu, PEOPLE, 25 Nov. 2025 The film began its Oscar-qualifying run-in select theaters in New York and Los Angeles and now is available to rent or buy on Amazon Prime Video. Addie Morfoot, Variety, 24 Nov. 2025
Verb
Blake ran in the Democratic primary for mayor and cross-endorsed Mamdani. Ross O'Keefe, The Washington Examiner, 24 Nov. 2025 They were allowed to shoot Gabriel Basso, who plays the deputy national security advisor (Bigelow cast him after watching his turn in The Night Agent), running in front of the White House, but he wasn’t allowed to — even accidentally — step on the curb in front of the building. Seija Rankin, HollywoodReporter, 24 Nov. 2025 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 28 Nov. 2025.

Kids Definition

run-in

noun
ˈrən-ˌin
: an angry dispute : quarrel

More from Merriam-Webster on run-in

Last Updated: - Updated example sentences
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