Proto-Lezghian: *ḳac̣a
Meaning: 1 vertebra 2 (upper) part of shin
Agul: ḳac̣ 1
Tsakhur: kɨc̣a 2
Comment: The PL paradigm must be reconstructed as *kac̣a ( > Ag. ḳac̣ with assimilation), obl. *koc̣ä- ( > Tsakh. obl. kɨc̣a-, spread also to dir. kɨc̣a). The root must have denoted some small bone.