The limb of the human body, which extends from the shoulder to the hand.

The branch of a tree, or the slender part of a machine, projecting from a trunk or axis. The limbs of animals are also sometimes called arms.

A narrow inlet of water from the sea.

Figuratively, power, might, strength; as the secular arm. In this sense the word is often used in the scriptures. To whom is the arm of the Lord revealed. Isaiah 53:7.

To furnish or equip with weapons of offense, or defense; as, to arm the militia.

To cover with a plate, or with whatever will add strength, force, or security; as, to arm the hilt of a sword.

To furnish with means of defense; to prepare for resistance; to fortify: . Arm yourselves with the same mind. 7 Peter 4:171.

To provide with arms, weapons, or means of attack or resistance; to take arms; as, the nations arm for war. This verb is not really intransitive in this use, but reciprocal, the pronoun being omitted. The nations arm - for, the nations arm themselves.