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Noun arm has 6 senses
  1. arm - 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
    --1 is a kind of     limb
    --1 is a part of
     body, organic structure, physical structure; homo, man, human being, human
     --1 has parts:
     brachial artery, arteria brachialis; cephalic vein, vena cephalica; forearm; hand, manus, mitt, paw; ulnar nerve, cubital nerve, nervus ulnaris; biceps brachii, musculus biceps brachii, biceps humeri; triceps brachii, musculus triceps brachii; elbow, elbow joint, cubitus, cubital joint, articulatio cubiti; wrist, carpus, wrist joint, radiocarpal joint, articulatio radiocarpea; arm bone; humerus
  2. weapon, arm, weapon system - any instrument or instrumentality used in fighting or hunting; "he was licensed to carry a weapon"
    --2 is a kind of instrument
    --2 is a part of
     weaponry, arms, implements of war, weapons system, munition
     --2 has particulars:
     bow; bow and arrow; brass knucks, knucks, brass knuckles, knuckles, knuckle duster; fire ship; flamethrower; gun; knife; pike; projectile, missile; slasher; sling; spear, lance, shaft; stun gun, stun baton; sword, blade, brand, steel; tomahawk, hatchet; weapon of mass destruction, WMD, W.M.D.; Greek fire
    Derived forms: verb arm2, verb arm1
  3. branch, subdivision, arm - an administrative division of some larger or more complex organization; "a branch of Congress"
    --3 is a kind of division
    --3 has particulars:
     post office, local post office; executive branch, Executive Office of the President; legislative branch; judicial branch
  4. arm, branch, limb - any projection that is thought to resemble an arm; "the arm of the record player"; "an arm of the sea"; "a branch of the sewer"
    --4 is a kind of projection
  5. arm - the part of an armchair or sofa that supports the elbow and forearm of a seated person
    --5 is a kind of     armrest
    --5 is a part of armchair
    --5 has particulars: writing arm
  6. sleeve, arm - the part of a garment that is attached at armhole and provides a cloth covering for the arm
    --6 is a kind of cloth covering
    --6 is a part of garment
    --6 has parts: cuff, turnup; elbow; wristband
    --6 has particulars:
     dolman sleeve; long sleeve; raglan sleeve; shirtsleeve; short sleeve
,Verb arm has 2 senses
  1. arm, build up, fortify, gird - prepare oneself for a military confrontation; "The U.S. is girding for a conflict in the Middle East"; "troops are building up on the Iraqui border"
    Antonyms: disarm, demilitarize, demilitarise
    Derived forms: noun armor2, noun armament2, noun arm2
    Sample sentence:
    Somebody ----s
  2. arm - supply with arms; "The U.S. armed the freedom fighters in Afghanistan"
    --2 is one way to     supply, provide, render, furnish
    Derived forms: noun armament1, noun arm2
    Sample sentences:
    Somebody ----s something
    Somebody ----s somebody
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