köken: Agent noun from пу́я се (púja se, “to perk, to swank”) (dialectal) + -як (-jak), literally meaning perker-bird. Compare Latin pāvō (“peafowl”) (whence Bulgarian пау́н (paún, “peecock”)).
Etymology tree Proto-Indo-European *weǵʰ- Proto-Indo-European *wéǵʰeti Proto-Germanic *weganą Proto-Germanic *wēgō Proto-West Germanic *wāgu Old High German waga Middle High German wāgebor. Old Polish waga Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Polish -ny Old Polish ważny Polish ważny Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-kos…