Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “run sth in”

run sth in

UK (US break sth in)
verb uk phrasal verb with run   /rʌn/ (present participle running, past tense ran, past participle run) us  
If you run in a vehicle, you use it carefully and slowly for a short time when it is new, so that you do not damage its engine.
(Definition of run sth in from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of run sth in?
Browse related topics

You are looking at an entry to do with Using and misusing, but you might be interested in these topics from the Using and not using topic area:

Add Cambridge dictionaries to your browser to your website

Translations of “run sth in”

Word of the Day

initial

of or at the beginning

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More