\ 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

ran in; run in; running in; runs 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

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: Verb The Zombie Lumberjack Match will be remembered for many reasons, one of which was Miz’s injury which ended an unprecedented all-time run in sports entertainment of a WWE Superstar staying healthy. Alfred Konuwa, Forbes, 5 June 2021 Champa and Dutt will run in the 1,600 on Saturday, Elkurd will be in the 800 and Champa will also run the 3,200. Tim Bielik, cleveland, 4 June 2021 Although only eight horses run in the Belmont Stakes, the competition is strong. Larry Stumes, San Francisco Chronicle, 4 June 2021 An Edgewood police officer was hospitalized early Friday after a Maserati struck his squad car in a hit-and-run in far northeast Dallas, authorities said. Kelli Smith, Dallas News, 4 June 2021 This budget-friendly cleaning essential picked up 11 grams of dirt per run in our tests. Nishka Dhawan, USA TODAY, 3 June 2021 What Sciarini couldn’t have anticipated, however, was having to do an extra run in the 300-meter hurdles Wednesday at the Class 3A Minooka Sectional. Jeff Vorva,, 3 June 2021 Candidates don't declare party affiliations to run in primaries. John Brummett, Arkansas Online, 1 June 2021 As a 2-year-old, Rombauer had a second-place finish in the Grade 1 American Pharoah Stakes and a fifth-place run in the Grade 1 Breeders’ Cup Juvenile. Mark Inabinett |, al, 31 May 2021

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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Cite this Entry

“Run-in.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2021.

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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

More from Merriam-Webster on run-in

Thesaurus: All synonyms and antonyms for run-in

Nglish: Translation of run-in for Spanish Speakers


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