Proto-Korean: *pùthjǝ̀
Meaning: pupil of the eye
Russian meaning: зрачок глаза
Modern Korean: nun-pučhǝ
Middle Korean: núns-pùthjǝ̀
Comments: Nam 116, KED 363. -pùthjǝ̀, originally "child" (with a widely spread metaphor "pupil of the eye" = "child of the eye") is folk-etymologically perceived as = puthjǝ "Buddha".