definition of
muscular

[1] #1 muscular a. of or relating to or consisting of muscle; "muscular contraction". wn

[2] #2 muscular a. [mesomorphic] having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer. wn

[3] #3 muscular s. [brawny, hefty, powerful, sinewy] (of a person) possessing physical strength and weight; rugged and powerful; "a hefty athlete"; "a muscular boxer"; "powerful arms". wn