Proto-Altaic: *lā̀k`a ( ~ *ĺ-)
Meaning: a k. of plant with edible root
Russian meaning: вид растения со съедобным корнем
Comments: An Eastern isogloss. Cf. perhaps also WMong. naŋgi 'water caltrop, water chestnut' (L 564), although the medial cluster is unclear, or {naɣa, Kh. nag "цветок со стеблем без листьев").