each of the two upper limbs of the human body from the shoulder to the hand, a thing comparable to an arm in form or function, typically something that projects from a larger structure

give one's right arm, twist someone's arm, up in arms

Formal and Informal Expressions of arm

In different contexts, you can replace 'arm' with suitable alternatives. In a more formal setting, 'limb, appendage' is apt. In informal speech or writing, 'gun, heat' is a commonplace synonym.

arm: Explore its Definition & Usage

arm Definition

1each of the two upper limbs of the human body from the shoulder to the hand
2a thing comparable to an arm in form or function, typically something that projects from a larger structure

Using arm: Examples

Take a moment to familiarize yourself with how "arm" can be used in various situations through the following examples!

Example
He broke his arm playing football.
Example
She put her arm around my shoulder.
Example
The robot has a mechanical arm that can lift heavy objects.
Example
The chair has armrests for added comfort.

arm Synonyms and Antonyms

Synonyms for arm

Phrases with arm

give one's right arm
be willing to make a great sacrifice
Example
I would give my right arm to be able to play the piano like that.
twist someone's arm
persuade or pressure someone to do something
Example
I had to twist his arm to get him to come to the party.
up in arms
very angry and ready to protest or fight
Example
The community was up in arms over the proposed construction of a new highway.

Origins of arm

from Old English 'arm', from Proto-Germanic 'armaz'

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Summary: arm in Brief

An 'arm' [ɑːm] is each of the two upper limbs of the human body from the shoulder to the hand. It can also refer to a comparable thing in form or function, such as a mechanical arm or armrests on a chair. Phrases like 'give one's right arm' and 'twist someone's arm' use 'arm' metaphorically to denote sacrifice and persuasion, respectively. 'Up in arms' means being very angry and ready to protest or fight.