sternocleidomastoid
ster no clei do mas toid |ˌstərnōˌklīdəˈmastoid ˌstərnoʊˌklaɪdoʊˈmæstɔɪd |(also sternocleidomastoid muscle ) ▶noun Anatomy each of a pair of long muscles that connect the sternum, clavicle, and mastoid process of the temporal bone and serve to turn and nod the head.
sternocleidomastoid |ˌstəːnə (ʊ )ˌklʌɪdə (ʊ )ˈmastɔɪd |(also sternocleidomastoid muscle ) ▶noun Anatomy each of a pair of long muscles which connect the sternum, clavicle, and mastoid process of the temporal bone and serve to turn and nod the neck.