Arm

1. n. A weapon of offense or defense; an instrument of warfare; — commonly in the pl.
2. n. The limb of the human body which extends from the shoulder to the hand; also, the corresponding limb of a monkey.
3. n. Anything resembling an arm
4. n. The fore limb of an animal, as of a bear.
5. n. A limb, or locomotive or prehensile organ, of an invertebrate animal.
6. n. A branch of a tree.
7. n. A slender part of an instrument or machine, projecting from a trunk, axis, or fulcrum; as, the arm of a steelyard.
8. n. The end of a yard; also, the part of an anchor which ends in the fluke.
9. n. An inlet of water from the sea.
10. n. A support for the elbow, at the side of a chair, the end of a sofa, etc.
11. 1n. 1 A weapon of offense or defense; an instrument of warfare; — commonly in the pl.
12. 1n. 1 The limb of the human body which extends from the shoulder to the hand; also, the corresponding limb of a monkey.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.