sinewy
adjective
1. (of meat) full of sinews; especially impossible to chew
Similar word(s): tough, fibrous, stringy, unchewable
2. consisting of tendons or resembling a tendon
Similar word(s): tendinous
3. (of a person) possessing physical strength and weight; rugged and powerful
Similar word(s): strong, brawny, hefty, muscular, powerful, rugged