Proto-North Caucasian: *pHVrṭwV
Meaning: some inner organ
Notes: A Tsez-Lezg. isogloss. The word strikingly resembles PK *pir(s̥1̇)ṭw- 'lung' (see Klimov 1964, 189 where the author lists the Gunz. word, but erroneously links also the reflexes of PEC *qwǝlɵ_V- q.v.).