How to Spell arm

arm - noun

• The portion of the upper human appendage, from the shoulder to the wrist and sometimes including the hand.

• The extended portion of the upper limb, from the shoulder to the elbow.

• A limb, or locomotive or prehensile organ, of an invertebrate animal.

• A long, narrow, more or less rigid part of an object extending from the main part or centre of the object, such as the arm of an armchair, a crane, a pair of spectacles or a pair of compasses.