noun
(anatomy) The portion of the upper human appendage, from the shoulder to the wrist and sometimes including the hand.
(anatomy) The extended portion of the upper limb, from the shoulder to the elbow.
A limb, or locomotive or prehensile organ, of an invertebrate animal.
The part of a piece of clothing that covers the arm.
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.
(geography) A bay or inlet off a main body of water.
A branch of an organization.
(figurative) Power; might; strength; support.
(baseball, slang) A pitcher
(genetics) One of the two parts of a chromosome.
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.
(UK dialectal, chiefly Scotland) To be pitied; pitiful; wretched.
noun
(usually used in the plural) A weapon.
(in the plural) Heraldic bearings or insignia.
(in the plural, obsolete) War; hostilities; deeds or exploits of war.
verb
(transitive) To supply with armour or (later especially) weapons.
(transitive, figurative) To supply with the equipment, knowledge, authority, or other tools needed for a particular task; to furnish with capability; to equip.
(transitive) To prepare (a tool, weapon, or system) for action; to activate.
(intransitive, of a tool, weapon, or system) To become prepared for action; to activate.
(transitive) To cover or furnish with a plate, or with whatever will add strength, force, security, or efficiency.
(intransitive) To take up weapons; to arm oneself.
(transitive) To fit (a magnet) with an armature.