From Wiktionary, the free dictionary
From вичи (viči, “brother”) + хинар (χinar, “daughter”).
вичехинар • (vičeχinar)
- fraternal niece
- Gukasjan, Vorošil (1974) “вичехинар”, in Удинско-азербайджанско-русский словарь [Udi–Azerbaijani–Russian Dictionary][1], Baku: Academy Press, page 99