say it: MUHS-uhl
muscle is a noun and verb meaning "one of the contractile organs of the body". It carries 6 recorded senses.
one of the contractile organs of the body
animal tissue consisting predominantly of contractile cells
authority or power or force (especially when used in a coercive way)
“the senators used their muscle to get the party leader to resign”
possessing muscular strength
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for muscle come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.