Muscle

1. n. See Mussel.
2. n. An organ which, by its contraction, produces motion.
3. n. The contractile tissue of which muscles are largely made up.
4. n. Muscular strength or development; as, to show one’s muscle by lifting a heavy weight.

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.