Definition of Arm

Noun

• the part of a garment that is attached at the armhole and that provides a cloth covering for the arm
  sleeve
• a division of some larger or more complex organization
  "a branch of Congress"
  "botany is a branch of biology"
  "the Germanic branch of Indo-European languages"
  branch subdivision
• the part of an armchair or sofa that supports the elbow and forearm of a seated person
  
• any instrument or instrumentality used in fighting or hunting
  "he was licensed to carry a weapon"
  weapon - weapon system
• any projection that is thought to resemble a human arm
  "the arm of the record player"
  "an arm of the sea"
  "a branch of the sewer"
  branch limb
• 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
  

Verb

• supply with arms
  "The U.S. armed the freedom fighters in Afghanistan"
  
• prepare oneself for a military confrontation
  "The U.S. is girding for a conflict in the Middle East"
  "troops are building up on the Iraqi border"
  - build up fortify gird

• Scrabble® score of the arm (5)
• Word Chums® score of the arm (7)
• Words With Friends® score of the arm (6)