Proto-Yenisseian: *kuʔw-
Meaning: coal
Ket: kuʔ 'coal', kūɣuĺ1, pl. -ǝŋ1, South. kūĺt, pl. -ǝŋ1 'fire-brand'
Yug: kufɨl1,5, pl. -ɨŋ1; kufɨlči1, pl. kufɨlčaŋ1 'coal, fire-brand'; kū 'rust' (Werner 1, 458)
Kottish: hupōi, pl. hupōjaŋ "coal"; Ass. (М., Сл.) kuvulán "burning coal"
Arin: kuburuŋ (Кл.) "heat"; kuburúŋ (М., Сл.) "burning coal"
Comments: ССЕ 241. The stem *kuʔw- is directly reflected in Ket. kuʔ and Kott. hupōi; the other forms reflect a not quite clear compound *kuʔw-bVĺ (with secondary devoicing > *kuʔw-pVĺ > Ket kūɣuĺ, Yug kufɨl). The second component is perhaps PY *bVʔĺ 'thick' ("thick place of coal" = "fire-brand"?). Werner 1, 457 reconstructs <*kuʔ> and <*kuphǝʎ>, suggesting that the second component of the latter can be = Kott. fal, phal 'hot' (see *ʔapV).
