oculomotor nerve

noun Anatomy.

1. either one of the third pair of cranial nerves, consisting chiefly of motor fibers that innervate most of the muscles of the eyeball.

noun

1. the third cranial nerve, which supplies most of the eye muscles

n.

1. A nerve originating in the midbrain below the cerebral aqueduct, supplying all the extrinsic muscles of the eye except the lateral rectus and the superior oblique muscles, and supplying the elevator muscle of the upper eyelid, the ciliary muscle, and the sphincter muscle of the pupil.third cranial nerve