muscle bound[adjective]Synonyms: stiff, buckram, cardboard, stilted, wooden
[TahlilGaran] English Synonym Dictionary ▲
muscle bound adj. Having your muscles large, hard, and tight from too much exercising; having muscles so developed that you can hardly move.
Bob was big and strong, but he was muscle-bound, and Bill could beat him. An athlete must train properly so as not to become muscle-hound. [TahlilGaran] English Idioms Dictionary ▲