Sternocleidomastoid

1 definition found

From WordNet (r) 2.0 [wn]:

  sternocleidomastoid
       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
           muscle}, {sternocleido mastoideus}, {musculus


           sternocleidomastoideus}]