Комментарии:EAS 113, Poppe 18, Цинциус 1972, 6, АПиПЯЯ 80, Лексика 171, TMN 3, 387 ("onomatopoetisch"). The Turk. form is probably contaminated with *Kās == TM *gasa 'crane, duck', which should explain the exceptional preservation of vowel length. See also comments to *ki̯ujilV and *gi̯ằla.
