上颔

上颔	shàng hàn	mandible
上	shǎng	used in 上声
上	shàng	(bound form) up; upper; above; previous / first (of multiple parts) / to climb; to get onto; to go up / to attend (class or university) / (directional complement) up / (noun suffix) on; above
颔	hàn	chin / to nod (one's assent)