köken: Borrowed from Franco-Provençal avalançhe (Savoy), blend of aval (“downhill”) and standard lavençhe, from Vulgar Latin *labanka (compare Occitan lavanca, Italian valanga), alteration of Late Latin labina (“landslide”) (compare (Dauphiné) Franco-Provençal lavino, Romansh lavina), from Latin lābor (“to slip, slide”).
Bahman (the eleventh solar month of the Persian calendar) · Name of the second day of any month of the solar Persian calendar · a male given name, Bahman
köken: From Middle Persian [Book Pahlavi needed] (whwmn' /wahman/), from Old Persian *Vahumanah, name of the first Amahraspand (divine deity) in Zoroastrianism, guardian of cattle, in Avestan 𐬬𐬊𐬵𐬎⸱𐬨𐬀𐬥𐬀𐬵 (vohu.manah). Also showing botanical meanings in Middle Persian, from which Classical Syriac ܒܗܡܢ (bahman) and Arabic بَهْمَن (bahman) are borrowed.
köken: Morphologically, күс- (küs-, “to move from one place to another”) + -кен (-ken), for the latter compare ташҡын (taşqın, “flood”). Compare to Kazakh көшкін (köşkın, “avalanche”); Kyrgyz көчкү (köckü, “landslide, avalanche”), Uzbek koʻchki (“landslide, avalanche”), etc.