sinewy

adjectives

(of meat) full of sinews; especially impossible to chew

fibrous, sinewy, stringy, unchewable

consisting of tendons or resembling a tendon

sinewy, tendinous

is derived from

pertains to

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

"a hefty athlete"; "a muscular boxer"; "powerful arms"

brawny, hefty, muscular, powerful, sinewy

is derived from