ALL meanings of splenius
sple·ni·us
S s - noun plural splenius a broad muscle on each side of the back of the neck and the upper part of the thoracic region, the action of which draws the head backward and assists in turning it to one side. 1
- noun splenius either of two flat muscles situated at the back of the neck that rotate, flex, and extend the head and neck 0
- noun splenius either of two large, flat muscles at the back of the neck, serving to rotate and extend the head and rotate and flex the neck 0