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
Leaving a spacecraft in one doesn’t completely alleviate the risks of in-orbit collisions, and any run-ins present the possibility of junk spewing into other areas where active satellites are operating. Jackie Wattles, CNN Money, 10 Mar. 2026 With this police run-in, Country Joe and the Fish received a slew of press, riling up the public ahead of their Woodstock performance. Cerys Davies, Los Angeles Times, 9 Mar. 2026
Verb
With his team down by a run in the bottom of the ninth, Araúz pinch hit for Allen Córdoba and grounded out weakly to second base. Melissa Lockard, New York Times, 11 Mar. 2026 Last week, 10 Republicans and Harris qualified to run in November's election for a full two-year term. Jeff Amy and Sophie Bates The Associated Press, Arkansas Online, 11 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 12 Mar. 2026.

Kids Definition

run-in

noun
ˈrən-ˌin
: an angry dispute : quarrel

More from Merriam-Webster on run-in

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster