noun

1. 1. an upper limb of the human body
   2. in anatomy, the part of the upper limb between the shoulder and the elbow
   3. in nontechnical use, the part of the upper limb between the shoulder and the wrist
2. anything resembling this in structure or function; esp.,
   1. the forelimb of some vertebrate animals
   2. any limb of an invertebrate animal
3. anything commonly in contact with the human arm; esp.,
   1. a sleeve of a garment
   2. a support for the arm on a chair, sofa, etc.
4. anything thought of as armlike, esp. in being attached or connected to something larger an arm of the sea, a yardarm, the arm of a balance, an arm of the government, etc.
5. power to seize, control, etc. the long arm of the law
6. ☆ Baseball, Football ability to pitch or throw a ball

Etymology: ME < OE earm; akin to L armus, Goth arms, OHG arm: see art

noun

1. any instrument used in fighting; weapon: usually used in pl.
2. warfare; fighting
3. 1. coat of arms
   2. insignia of countries, corporations, etc.

4. Etymology: a merging with arm (sense )

   any combatant branch of the military forces

Etymology: ME < OFr armes, pl. < L arma, implements, weapons; akin to armus, shoulder, upper arm (see art): for semantic development see arm, sense

transitive verb

1. to provide with weapons, tools, etc.
2. to provide with something that protects or fortifies
3. to prepare to attack or to meet attack reporters armed with questions
4. to make ready or equip with parts needed for operation to arm a missile with a warhead

Etymology: ME armen < OFr armer < L armare, to arm < arma: see the n.

intransitive verb

1. to equip oneself with weapons, as in preparing for war
2. to prepare for any struggle