Reconstructed for the PEC level. The word seems to be genuine at least in Ing., PL (where regular phonetic development took place) and Laki (the Lak. word has a tense -c:- which can not be explained if we assume a loan from Av., Darg. or Lezg. kuc). The Laki form (with regular weakening *kuc: > kuc) is the most probable source for Avar kuc 'measure, form; face' (whence Akhv. (cited from Khaidakov 1973) kuči 'face'), and for Darg. kuc 'appearance, form, build' (identical in all dialects: Ak., Ur., Muir., Sirg., Kub., Tsud. kuc).