Read the dictionary definition of muscular. All definitions for this word.
1. having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer
2. having or suggesting great physical power or force
1. the muscular and passionate Fifth Symphony
3. (of a person) possessing physical strength and weight; rugged and powerful
1. a hefty athlete
2. a muscular boxer
3. powerful arms
4. of or relating to or consisting of muscle
1. muscular contraction