Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “arm”


verb     /ɑːm/ US  /ɑːrm/
[I or T] to provide yourself or others with a weapon or weapons : Nobody knows who is arming the terrorists . I armed my self with a baseball bat and went to investigate the noise . They are currently arming for war . → Opposite disarmProviding weapons or taking weapons away C2 [T] to provide yourself or others with equipment or knowledge in order to complete a particular task : She armed her self for the interview by finding out all she could about the company in advance . I went to the meeting armed with the relevant facts and figures .Giving, providing and supplying
(Definition of arm verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of arm

Browse related topics

You are looking at an entry to do with Providing weapons or taking weapons away, but you might be interested in these topics from the War, peace and fighting topic area:

Definitions of “arm” in other dictionaries

Word of the Day


to mix eggs with a little milk and mix again as they are being fried

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More