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to run in
[phrase form: run]
01
to take someone suspected of a crime or violation into custody, typically by law enforcement
Informal
Grammatical Information
Composition
phrasal
Action verb
Regular
Separable
Particle
in
Base verb
run
Present tense
run in
3rd person singular
runs in
Present participle
running in
Past simple
ran in
Past participle
run in
Examples
The police had to run in the suspect after a high-speed chase.
02
to use the machinery slowly at the start to make sure it works properly
Examples
When he got the new car, the manual advised him to run in the engine for the first 1,000 miles.
