Proto-Lezghian: *ʡʷe(l)s: ( ~ ʔIʷ-)
Meaning: 1 wood, timber 2 firewood
Rutul: us 2
Tsakhur: os 1
Udi: ušI 2
Comment: Obl. base *ʡʷes:a- or *ʡʷes:e-, cf. Rut. úsu-, Tsakh. osa-, Gelm. oIs, oIs:a-. 4th class in Rut. and Tsakh. The root is preserved only in languages where there occurred a simplification of *-lC-clusters, thus the presence of *-l- in PL is postulated only on external evidence.
