1. relating to or consisting of muscle

- muscular contraction

2. having a pronounced muscular development and low body fat.

Similar word(s): athletic, mesomorphic

3. having or suggesting great physical power or force

- the muscular and passionate Fifth Symphony

Similar word(s): powerful

4. (of a person) possessing physical strength and weight; rugged and powerful

- a muscular boxer

Similar word(s): strong, brawny, hefty, powerful, sinewy, rugged