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1arm noun \ˈärm\
Definition of ARM
1
: a human upper limb; especially : the part between the shoulder and the wrist
2
: something like or corresponding to an arm: as
a : the forelimb of a vertebrate
b : a limb of an invertebrate animal
c : a branch or lateral shoot of a plant
d : a slender part of a structure, machine, or an instrument projecting from a main part, axis, or fulcrum
e : the end of a ship's yard; also : the part of an anchor from the crown to the fluke — see anchor illustration
f : any of the usually two parts of a chromosome lateral to the centromere
3
: an inlet of water (as from the sea)
4
: a narrow extension of a larger area, mass, or group
5
: power, might <the long arm of the law>
6
: a support (as on a chair) for the elbow and forearm
7
: sleeve
8
: the ability to throw or pitch a ball well; also : a player having such ability
9
: a functional division of a group, organization, institution, or activity <the logistical arm of the air force>
— arm·less adjective
— arm·like adjective
— arm in arm
: with arms linked together <walked down the street arm in arm>
Origin of ARM
Middle English, from Old English earm; akin to Latin armus shoulder, Sanskrit īrma arm
First Known Use: before 12th century
Other Anatomy Terms
bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral
Rhymes with ARM
barm, charm, farm, harm, smarm
2arm verb
: to provide (yourself, a group, a country, etc.) with weapons especially in order to fight a war or battle
: to provide (someone) with a way of fighting, competing, or succeeding
: to make (a bomb, weapon, etc.) ready for use
Full Definition of ARM
transitive verb
1
: to furnish or equip with weapons
2
: to furnish with something that strengthens or protects <arming citizens with the right to vote>
3
: to equip or ready for action or operation <arm a bomb>
intransitive verb
: to prepare oneself for struggle or resistance <arm for combat>
See arm defined for English-language learners »
Examples of ARM
They armed the men for battle.
The group of fighters was armed by a foreign government.
The two countries have been arming themselves for years, but now they have agreed to disarm.
We armed ourselves with the tools we would need to survive in the forest.
They arm people with accurate information.
arming women with the right to vote
Once the bomb has been armed, we have five minutes to escape.
Origin of ARM
Middle English armen, from Anglo-French armer, from Latin armare, from arma weapons, tools; akin to Latin ars skill, Greek harmos joint, arariskein to fit
First Known Use: 12th century
3arm noun, often attributive
Definition of ARM
1
a : a means (as a weapon) of offense or defense; especially : firearm
b : a combat branch (as of an army)
c : an organized branch of national defense (as the navy)
2
plural
a : the hereditary heraldic devices of a family
b : heraldic devices adopted by a government
3
plural
a : active hostilities : warfare <a call to arms>
b : military service
— up in arms
: aroused and ready to undertake a fight or conflict <voters up in arms over the proposed law>
Origin of ARM
Middle English armes (plural) weapons, from Anglo-French, from Latin arma
First Known Use: 13th century