\ ˈrən-ˌin How to pronounce run-in (audio) \

Definition of run-in

 (Entry 1 of 2)

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

run in


Definition of run in (Entry 2 of 2)

transitive verb

1a : to insert as additional matter
b : to make (typeset matter) continuous without a paragraph or other break
2 : 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

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Examples of run-in in a Sentence


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: Verb

While their romance is new, Beatrice and Edoardo have known each other for some time, as their parents run in similar circles. Chloe Foussianes, Town & Country, "Princess Beatrice and Edoardo Mapelli Mozzi Just Made Their First Official Appearance as a Couple," 12 Mar. 2019 Now the pastor at St. Beatrice in Schiller Park, Schultz will swim, bike and run in his 100th competition Aug. 5 at the Glenview Sprint Triathlon. Steve Sadin,, "Mass start: Schiller Park priest set to compete in 100th triathlon," 11 July 2018 Rivera has twice been named the NFL’s Coach of the Year, most recently following the Panthers’ Super Bowl run in 2015. Joseph Person, charlotteobserver, "Owner David Tepper: Panthers blessed with Ron Rivera, 'a pretty good football side'," 10 July 2018 The effect of weak Kenai king salmon runs in recent years is shaking out all around the region. Anchorage Daily News, "‘Pretty devastating’: After years of poor king salmon runs, renowned Kenai River sport fishing community adjusts," 7 July 2018 Somebody’s not telling the truth here, obviously, and the numbers aren’t currently running in Jordan’s favor. Ed Kilgore, Daily Intelligencer, "Trump Believes ‘100 Per Cent’ in Jim Jordan’s Innocence in Sex Abuse Case. That’s Reassuring.," 5 July 2018 Red’s go-ahead run in the eighth was due to a catcher’s throwing error down to third base that wound up in left field. Robert Avery, Houston Chronicle, "League City Red ekes out Section Pony crown over League City White," 3 July 2018 So kudos to RobJin, who apparently created a version of Racer that runs in Unreal 4. Hayden Dingman, PCWorld, "This week in games: Borderlands 3 teased for PAX East, Dwarf Fortress is coming to Steam," 15 Mar. 2019 Since then, data-intensive providers like Netflix, Google, and Facebook have changed the way data is routed over the internet by building private content-delivery networks (CDNs) that run in parallel to the internet backbone. Popular Mechanics, "The Death of the Internet," 7 Feb. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'run-in.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of run-in


1799, in the meaning defined at sense 1


1888, in the meaning defined at sense 1b

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Statistics for run-in

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Time Traveler for run-in

The first known use of run-in was in 1799

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More Definitions for run-in



English Language Learners Definition of run-in

informal : an angry argument


\ ˈrən-ˌin\

Kids Definition of run-in

: an angry argument

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More from Merriam-Webster on run-in

Rhyming Dictionary: Words that rhyme with run-in

Thesaurus: All synonyms and antonyms for run-in

Spanish Central: Translation of run-in

Nglish: Translation of run-in for Spanish Speakers

Comments on run-in

What made you want to look up run-in? Please tell us where you read or heard it (including the quote, if possible).


an enemy or opponent

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