Proto-Altaic: *pōki ( ~ p`-) (?)
Meaning: deep
Russian meaning: глубокий
Comments: Cf. perhaps -pók in MKor. pắi-s-pók 'navel' (*'belly cavity'?); TM *pokV-n (ТМС 1, 469) 'corner of the eye'. In Turkic cf. perhaps OUygh. boɣaj (boɣań?) 'low', borrowed in Mong. as WMong. boɣoni (see EDT 322). This all seems rather uncertain; but for Mong. the reconstruction *hügün (based on the archaic Mongor form fugun) seems probable, and the Mong.-Jpn. parallel at least seems satisfactory.
