Proto-Tsezian: *ƛuχ:
Meaning: 1 ceiling 2 on the ceiling
Tsezi: ƛeχe-ƛ 2
Ginukh: ƛeχe-ƛ 2
Bezhta: ƛuχ 1 (Khosh.)
Comments: PTsKh *ƛɨχǝ- ( ~ -i-, -ǝ-) is reflecting the old oblique base (with Ablaut) *ƛɨχ:ǝ- (cf. also Tsez. ƛeχu 'thin log').
There exists also a PTs variant *ƛuχ(u), reflected in Gin. ƛuhu 'beam' and PGB *ƛuʁ (*ƛũʁ) > Bezht. Tlad. ƛuʁ 'ceiling', Gunz. ƛũhi 'on the ceiling'. It is interesting to note Avar forms: Av. ƛ:uʁúr, Chad. ƛuhur 'planking (for the ceiling)' - which in this case are probably old borrowings from the neighbouring Tsez languages (genuine relationship is excluded for phonetic reasons).
