Комментарии:VEWT 429, KW 335, Владимирцов 213, АПиПЯЯ 285. The Mong. form can be borrowed from Turkic, but the Tungus and Korean forms are evidently genuine. The variation *sigöl / *sögöl in Turkic points perhaps to original *segöl (which would be the expected form).
