Комментарии:Владимирцов 206, Tekin 1979, 127. Despite a widespread point of view (see e.g. ЭСТЯ 5, 277), Mong. can hardly be < Turk. The root (especially in the Turk.-Mong. area) is liable to mergers with *k`i̯ubu 'coffin' and *k`ăp`ù 'barrier' q. v.