Комментарии:EAS 97, KW 248, Poppe 79, Цинциус 1984, 121-122. The etymology seems quite probable, although the TM vocalism is not clear (a result of some contamination?). For Jpn., however, cf. alternatively PA *kū̀rV 'to cut out' or PA *k`uli 'dig' q. v.