Proto-West-Caucasian: *č:ʷa-nǝ
Meaning: 1 to sharpen, whet 2 sharp
Adyghe: č́ān 2
Kabardian: žān 2
Ubykh: čan- 1
Comments: PAK *č́:ánǝ. Despite Abdokov (1973, 50) the Adygh word can not be related to Ub. (n)dan 'sharp' for phonetic reasons; but Ub. čan- 'to sharpen' is a perfect match (and it can not be considered a loan from Ad. because of its non-palatalised č- and verbal function).