Reconstruction:Proto-Turkic/buŕagu

Presumably from *buŕ-a- (“to bear a calf”), the deriving stem is reconstructed as *bi̯ŏ́ŕu at the controversial Proto-Altaic level and compared to Evenki бе̄ру (bēru, “sheep”), and Japanese 羊 (hitsuyi, “sheep”). Cognate to Proto-Mongolic *biraxu (“calf”), however Mongolic might be a loanword.

buŕagu

1. calf

• *buŕagu-la-

• Medieval
  • Karakhanid: بُزاغُو‎ (buzāɣū)
  • Old Turkic
    • Orkhon: 𐰉𐰆𐰕𐰍𐰆‎ (buzaɣu)
    • Old Uyghur: pwz՚γw (buzaɣu)
  • Kipchak:
    • Cuman: [script needed] (buzaw)
    • Mamluk-Kipchak: [script needed] (buzaɣu), [script needed] (buzawu)
• Oghuz
  • West Oghuz
    • Azerbaijani: buzov
    • Gagauz: buzaa
    • Ottoman Turkish: بوزاغو‎ (buzağu)
      • Turkish: buzağı
• Kipchak
  • West Kipchak
    • Kumyk: бузав
    • Karachay-Balkar: бузоу
  • North Kipchak
    • Bashkir: быҙау (bïðaw)
    • Tatar: бозау (bozau)
  • South Kipchak
    • Caspian
      • Kazakh: бұзау (buzaw)
    • Kyrgyz-Kipchak
      • Kyrgyz: музоо (muzoo)
      • Southern Altai: бозу (bozu)
• Karluk:
  • Chagatai: [script needed] (buzaɣu), [script needed] (buzaɣ)
    • Uyghur: موزاي‎ (mozay)
    • Uzbek: buzoq
• Siberian
  • South Siberian
    • Sayan Turkic
      • Tuvan: бызаа (bızaa)
    • Yenisei Turkic
      • Khakas: пызо (pızo)
• Oghur:
  • Chuvash: пӑру (păru)
  • → Hungarian: borjú
• ?→ Proto Mongolic: *biraxu

• Starostin, Sergei; Dybo, Anna; Mudrak, Oleg (2003), “*bi̯ŏ́ŕu”, in Etymological dictionary of the Altaic languages (Handbuch der Orientalistik; VIII.8), Leiden, New York, Köln: E.J. Brill
• Clauson, Gerard (1972), “buza:ğu:”, in An Etymological Dictionary of pre-thirteenth-century Turkish, Oxford: Clarendon Press, page 391