definition of
sinewy

[1] #1 sinewy s. [fibrous, stringy, unchewable] (of meat) full of sinews; especially impossible to chew. wn

[2] #2 sinewy a. [tendinous] consisting of tendons or resembling a tendon. wn

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