From Wiktionary, the free dictionary
From вичи (viči, “brother”) + -лугъ (-luɣ, derivative suffix).
вичилугъ • (vičiluɣ)
- brotherhood
- Gukasjan, Vorošil (1974) “вичилугъ”, in Удинско-азербайджанско-русский словарь [Udi–Azerbaijani–Russian Dictionary][1], Baku: Academy Press, page 100