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