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English definition of “muscle”


noun [C/U]    /ˈmʌs·əl/
biology a mass of tissue in the body, often attached to bones, that can tighten and relax to produce movement Muscle is also the power to do things or to make people behave in a certain way: [U] Republicans are flexing some political muscle.
(Definition of muscle noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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