arm(arms)
n. 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 instrument or instrumentality used in fighting or hunting 同义词：weaponweapon system
an administrative division of some larger or more complex organization 同义词：branchsubdivision
any projection that is thought to resemble a human arm"the arm of the record player"; " an arm of the sea"
同义词：branchlimb
the part of an armchair or sofa that supports the elbow and forearm of a seated person the part of a garment that is attached at the armhole and that provides a cloth covering for the arm 同义词：sleeve
v.