muscle

one of the contractile organs of the body

animal tissue consisting predominantly of contractile cells

a bully employed as a thug or bodyguard; "the drug lord had his muscleman to protect him"

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

make one's way by force; "He muscled his way into the office"