Комментарии:EAS 46, KW 233, Владимирцов 171, 318, Poppe 19, Лексика 94. Cf. perhaps MKor. kɨ̀th 'edge'. The Jpn. form must have originally meant 'border fortification, fortress'; there is hardly any reason to regard it as borrowed from Old Paekche, despite Miller 1979).
