(n.) A muscle having two heads or origins; -- applied particularly to a flexor in the arm, and to another in the thigh.

adductor arm buccinator elbow forearm gemellus gluteus maximus infraspinatus intercostal latissimus dorsi levator masseter mentalis mylohyoid nasalis oblique occipitalis omohyoid pectineus pectoralis peroneus sphincter tensor trapezius triceps upper arm wrist