noun
plural arms
[count] either one of the two long body parts that join the top of your body at the shoulder and that end at the hand or wrist
the part of a piece of clothing (such as a shirt or coat) that covers the arm :sleeve
a part of a piece of furniture (such as a chair or couch) that gives support for a person's arm
a long thin piece that is connected to the main part of a machine, structure, etc., and that looks or moves like a human arm
a long and narrow area of water
the part of a group or organization that performs a specific job or function - usually singular
US sports :a person's ability to throw a ball - usually singular
an arm and a leg
informal :a very large amount of money
arm in arm
next to each other with the arm of one person linked at the elbow to the arm of another person
a shot in the arm
as long as someone's arm
at arm's length
from a distance that is the length of a person's arm
To keep someone or something at arm's length is to avoid being very close to or friendly with someone or something.
chance your arm
give your right arm
the long arm of the law
the ability of the police to find and catch people who commit crimes
twist someone's arm
with open arms
in a very kind and friendly way
noun
plural arms
[count] :a gun or other weapon that is used especially in a war - usually plural
arms [plural] :coat of arms
call to arms
A call to arms is a request or command to become ready to fight.
in arms
If someone is your brother/sister/comrade in arms, that person has helped you fight an enemy especially in a war.
lay down your arms
to put down your weapons and stop fighting
present arms
military - used as a command to hold your rifle so that it points straight up in front of you as a sign of respect;
take up arms
to pick up weapons and become ready to fight
under arms
serving in the military
up in arms
angry and ready to fight or argue
verb
arms; armed; arming
to provide (yourself, a group, a country, etc.) with weapons especially in order to fight a war or battle [+ obj]
[+ obj] :to provide (someone) with a way of fighting, competing, or succeeding
[+ obj] :to make (a bomb, weapon, etc.) ready for use