What is the meaning of arm?

noun

• A human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb.
• Any projection that is thought to resemble a human arm.
  • usage: "the arm of the record player"; "an arm of the sea"; "a branch of the sewer"
  • synonyms: branch, limb
• Any instrument or instrumentality used in fighting or hunting.
  • usage: "he was licensed to carry a weapon"
  • synonyms: weapon, weapon system
• The part of an armchair or sofa that supports the elbow and forearm of a seated person.
• A division of some larger or more complex organization.
  • usage: "a branch of Congress"; "botany is a branch of biology"; "the Germanic branch of Indo-European languages"
  • synonyms: branch, subdivision
• The part of a garment that is attached at the armhole and that provides a cloth covering for the arm.
  • synonyms: sleeve

verb

• Prepare oneself for a military confrontation.
  • usage: "The U. S. Is girding for a conflict in the Middle East"; "troops are building up on the Iraqi border"
  • synonyms: build up, fortify, gird
• Supply with arms.
  • usage: "The U. S. Armed the freedom fighters in Afghanistan"