'musculus sternocleidomastoideus' definitions:

Definition of 'musculus sternocleidomastoideus'

(from WordNet)
noun
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, sternocleidomastoid muscle, sternocleido mastoideus, musculus sternocleidomastoideus]