Proto-North Caucasian: *χwɨ̄rk_V
Meaning: tree, oak-tree
Notes: An Av.-Lezg. isogloss. Probable, but represented only in three languages, and thus not very reliable (note also phonetic problems: if we reconstruct medial *-r-, as suggested by the Av. form, we would rather expect *χʷ, not *χ:ʷ in PL).
