Definition of "Muscular" :

adjective: having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer

adjective: having or suggesting great physical power or force

"The muscular and passionate Fifth Symphony."

adjective: (of a person) possessing physical strength and weight; rugged and powerful

"A muscular boxer."

adjective: of or relating to or consisting of muscle

"Muscular contraction."