1. The limb of the human body which extends from the shoulder to the hand; also, the corresponding limb of a monkey.
2. Anything resembling an arm; as, The fore limb of an animal, as of a bear.
a limb, or locomotive or prehensile organ, of an invertebrate animal.
a branch of a tree.
a slender part of an instrument or machine, projecting from a trunk, axis, or fulcrum; as, the arm of a steelyard.
The end of a yard; also, the part of an anchor which ends in the fluke.
An inlet of water from the sea.
a support for the elbow, at the side of a chair, the end of a sofa, etc.
3. Power; might; strength; support; as, the secular arm; the arm of the law. To whom is the arm of the lord revealed? (isa. Lii. 1) arms end, the end of the arm; a good distance off. Arms length, the length of the arm. Arms reach, reach of the arm; the distance the arm can reach. To go (or walk) arm in arm, to go with the arm or hand of one linked in the arm of another. When arm in armwe went along. . To keep at arms length, to keep at a distance (literally or figuratively); not to allow to come into close contact or familiar intercourse. To work at arms length, to work disadvantageously.
Origin: as. Arm, earm; akin to OHG. Aram, g, D, dan, & Sw. Arm, Icel. Armr, goth. Arms, L. Armus arm, shoulder, and prob. To gr. Joining, joint, shoulder, fr. The root to join, to fit together; cf. Slav. Rame. Se
e art, article.
1. To take by the arm; to take up in one’s arms. And make him with our pikes and partisans a grave: come, arm him. (Shak) Arm your prize; i know you will not lose him. (two N. Kins)
2. To furnish with arms or limbs. His shoulders broad and strong, Armed long and round. (Beau. & Fl)
3. To furnish or equip with weapons of offense or defense; as, to arm soldiers; to arm the country. Abram . . . Armed his trained servants. (gen. Xiv. 14)
4. To cover or furnish with a plate, or with whatever will add strength, force, security, or efficiency; as, to arm the hit of a sword; to arm a hook in angling.
5. To furnish with means of defense; to prepare for resistance; to fortify, in a moral sense. Arm yourselves . . . With the same mind. (1 pet. Iv. 1) to arm a magnet, to fit it with an armature.
Origin: oe. Armen, f. Armer, fr. L. Armare, fr. Arma, pl, arms. See arms.

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