1.Definition: (of a person) possessing physical strength and weight; rugged and powerful

"A muscular boxer"

Related Adjective(s):brawny, hefty, powerful, sinewy

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

Related Adjective(s):mesomorphic

3.Definition: having or suggesting great physical power or force

"The muscular and passionate Fifth Symphony"

4.Definition: of or relating to or consisting of muscle

"Muscular contraction"