Muscle-bound Definition

musəlbound
adjective
Having a muscly physique; often, specif., having muscles so overdeveloped as to result in a stiff, inflexible way of moving.
Webster's New World
Not flexible or adaptive; rigid.
Webster's New World

Having pronounced muscle development through weightlifting, bodybuilding, or other physical exercise.

Wiktionary

(pejorative) Having excessive muscle.

Wiktionary

Alternative form of musclebound.

Wiktionary

Origin of Muscle-bound