contractile organ, contractor - a bodily organ that contracts

skeletal muscle, striated muscle - a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes

pronator - a muscle that produces or assists in pronation

supinator - a muscle (especially in the forearm) that produces or assists in supination

antagonistic muscle - (physiology) a muscle that opposes the action of another; "the biceps and triceps are antagonistic muscles"

eye muscle, ocular muscle - one of the small muscles of the eye that serve to rotate the eyeball

rectus - any of various straight muscles

muscle cell, muscle fiber, muscle fibre - an elongated contractile cell that forms the muscles of the body

involuntary muscle, smooth muscle - a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)

anatomical sphincter, sphincter, sphincter muscle - a ring of muscle that contracts to close an opening

tensor - any of several muscles that cause an attached structure to become tense or firm