The Proto-Altaic word *kēpʰa
Word *kēpʰa
Meaning jaw, face
See also Proto-Turkic: *gēp ‘form, example, image’
Proto-Tungus: *kepe ‘jaw, gills’

Other words that might be of interest
*bĕye ‘person, self, body’, *tʰŭpʰi- ‘to spit, spittle, saliva’, *tālV- ‘to lick’, *tilV ‘tongue, voice’, gār(a) ‘hand, arm’, *kʰi̯ăli ‘tongue’