Proto-Yenisseian: *ʔik
Meaning: skin (of animals, hairy); hair
Ket: ī 'skin', pl. iʔŋ; iŋɔĺt5 / iŋɔĺtǝ5, pl. iŋɔĺtǝŋ5 id.
Yug: ijɔl5 / igɔl5, pl. iŋgɔlɨŋ5 "skin"
Kottish: ēk, pl. ēkán, ēkŋ "hair"
Comments: ССЕ 193. Cf. also Ket. -iɣ-aq "to flay". The paradigm of igɔl in Yug is interesting: it shows that here we have a compound of *ʔik with some second component, each member gaving its own plural: igɔl - iŋ-gɔlɨŋ. The original meaning of the component -gɔl can only be guessed: cf. perhaps PEC *G_ŏŁV "skin" (NCED 463)? Werner 1, 392 <*igǝ>, doubting (for a not quite clear reason) the relationship of Kottish ēk 'hair'.
