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

any projection that is thought to resemble a human arm

any instrument or instrumentality used in fighting or hunting

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

the part of a garment that is attached at the armhole and that provides a cloth covering for the arm

The limb of the human body which extends from the shoulder to the hand; also, the corresponding limb of a monkey.

A branch of the military service; as, the cavalry arm was made efficient.

prepare oneself for a military confrontation

supply with arms

To take by the arm; to take up in one's arms.

To provide one's self with arms, weapons, or means of attack or resistance; to take arms.