in arms

idiom
Updated on: 15 Nov 2017

Definition of in arms

often used in the brother/sister/comrade in arms to indicate one has helped to fight an enemy especially in a war
  • He and I were brothers in arms.

Word by Word Definitions

arm play arms
  1. : a human upper limb

  2. : something like or corresponding to an arm: such as

  3. : the forelimb of a vertebrate

  1. : to furnish or equip with weapons

  2. : to furnish with something that strengthens or protects

  3. : to equip or ready for action or operation

  1. : a means (such as a weapon) of offense or defense

  2. : a combat branch (as of an army)

  3. : an organized branch of national defense (such as the navy)


Seen and Heard

What made you want to look up in arms? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

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

Love words? Need even more definitions?

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