Comments:A Western isogloss. Mong. *toguɣan must be a case of labial attraction < *tagu-ɣan. But cf. also *t`i̯ákù, as well as Kor. tok `earthenware vessel', togani 'earthenware dish in which metal or glue is melted' ( < Mong.?); cf. also a Wanderwort in Tung. (Ul. tukuru etc. 'bottle'), Ainu tokkuri, Jpn. tok(k)uri 'bottle', Kor. tuguri 'round metal dish'.
