What does "muscle" mean?

Muscle: Muscular strength or development; as, to show one's muscle by lifting a heavy weight. [Colloq.]

Additional senses

  1. 2.Etym: [AS. muscle, L. musculus a muscle, mussel. See above.] (Zoöl.) See Mussel. Muscle curve (Physiol.), contraction curve of a muscle; a myogram; the curve inscribed, upon a prepared surface, by means of a myograph when acted upon by a contracting muscle. The character of the curve represents the extent of the contraction.

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