Arm — Defs

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

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(Naut)
3.
Fig.: 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.

Phrases & compounds

Arm's end — the end of the arm; a good distance off.

Arm's length — the length of the arm.

Arm's reach — reach of the arm; the distance the arm can reach.

To go arm in arm — to go with the arm or hand of one linked in the arm of another.

To keep at arm's length — to keep at a distance (literally or figuratively); not to allow to come into close contact or familiar intercourse.

To work at arm's length — to work disadvantageously.

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

1.
A branch of the military service; as, the cavalry arm was made efficient.(Mil.)

03 v. t. To take by the arm; to take up in one's arms.

imp. & p. p. Armed; p. pr. & vb. n. Arming

1.
To take by the arm; to take up in one's arms.[Obs.]
“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.[R.]
“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.
Fig.: 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.

Phrases & compounds

To arm a magnet — to fit it with an armature.

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

1.
To provide one's self with arms, weapons, or means of attack or resistance; to take arms.