arm

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

:  to prepare oneself for struggle or resistance arm for combat

1a :  a means (such as a weapon) of offense or defense; especially :  firearmb :  a combat branch (as of an army)c :  an organized branch of national defense (such as the navy)

2 arms plural a :  the hereditary heraldic devices of a familyb :  heraldic devices adopted by a government

3 arms plural a :  active hostilities :  warfare a call to armsb :  military service

Armenian

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1 :  a human upper limb especially between the shoulder and wrist

2 :  something like an arm in shape or position an arm of the sea the arm of a chair

3 :  sleeve 1

4 :  ¹power 1 the long arm of the law

5 :  a foreleg of a four-footed animal

1 :  to provide with weapons

2 :  to provide with a way of fighting, competing, or succeeding She armed her lawyer with facts.

1 :  weapon, firearm

2 :  a branch of an army or of the military forces

3 arms plural :  the designs on a shield or flag of a family or government

4 arms plural :  actual fighting :  warfare a call to arms

1a:  a human upper limbb:  the part of the human upper limb between the shoulder and the wrist; also :  brachium

2a:  the forelimb of a vertebrate other than a human beingb:  a limb of an invertebrate animalc:  any of the usually two parts of a chromosome lateral to the centromere

3:  a group of subjects provided a particular treatment in a clinical trial Since this trial did not include a radiation-only treatment arm, it has been questioned whether radiation therapy alone might be as effective as sequential chemotherapy and radiation therapy in preserving the larynx.—Everett E. Vokes et al., The New England Journal of Medicine, 21 Jan. 1993

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