Proto-Nakh: *ḳaru
Meaning: coal
Chechen: ḳora
Ingush: ḳor
Batsbi: ḳor
Comments: 5th class in Chech., Ing., b in Bacb. Cf. also Shar. ḳoro, Khild. ḳoru, Cheb. ḳaru - proving the reconstruction with *-a-. The form ḳor in Bacb. is irregular (*ḳajru should be expected) and still has to be explained.