DICT.TW Dictionary Taiwan

 sternocleidomastoid muscle
      n : one of two thick muscles running from the sternum and
          clavicle to the mastoid and occipital bone; turns head
          obliquely to the opposite side; when acting together they
          flex the neck and extend the head [syn: sternocleidomastoid,
           sternocleido mastoideus, musculus
          sternocleidomastoideus]