Definitions from Wiktionary (ARM)

▸ noun:  (anatomy) The portion of the upper human appendage, from the shoulder to the wrist and sometimes including the hand.
▸ noun:  (anatomy) The extended portion of the upper limb, from the shoulder to the elbow.
▸ noun:  A limb, or locomotive or prehensile organ, of an invertebrate animal.
▸ noun:  The part of a piece of clothing that covers the arm.
▸ noun:  A long, narrow, more or less rigid part of an object extending from the main part or centre of the object, such as the armrest of an armchair, a crane, a pair of spectacles or a pair of compasses.
▸ noun:  (geography) A bay or inlet off a main body of water.
▸ noun:  A branch of an organization.
▸ noun:  (figurative) Power; might; strength; support.
▸ noun:  (baseball, slang) A pitcher
▸ noun:  (genetics) One of the two parts of a chromosome.
▸ noun:  A group of patients in a medical trial.
▸ verb:  (obsolete) To take by the arm; to take up in one's arms.
▸ adjective:  (UK dialectal, chiefly Scotland) Poor; lacking in riches or wealth.
▸ adjective:  (UK dialectal, chiefly Scotland) To be pitied; pitiful; wretched.
▸ noun:  (usually used in the plural) A weapon.
▸ noun:  (in the plural) Heraldic bearings or insignia.
▸ noun:  (in the plural, obsolete) War; hostilities; deeds or exploits of war.
▸ verb:  (transitive) To supply with armour or (later especially) weapons.
▸ verb:  (transitive, figurative) To supply with the equipment, knowledge, authority, or other tools needed for a particular task; to furnish with capability; to equip.
▸ verb:  (transitive) To prepare (a tool, weapon, or system) for action; to activate.
▸ verb:  (intransitive, of a tool, weapon, or system) To become prepared for action; to activate.
▸ verb:  (transitive) To cover or furnish with a plate, or with whatever will add strength, force, security, or efficiency.
▸ verb:  (intransitive) To take up weapons; to arm oneself.
▸ verb:  (transitive) To fit (a magnet) with an armature.
▸ adjective:  Abbreviation of Armenian. [Of, from, or pertaining to Armenia, the Armenian people, the Armenian language, or the Armenian alphabet.]
▸ noun:  Initialism of accelerated reply mail (a service of the United States Postal Service)
▸ noun:  Initialism of adjustable rate mortgage.
▸ noun:  (computing) Initialism of Acorn RISC Machine or Advanced RISC Machine.
▸ noun:  Initialism of Australian Republic Movement.

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