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This Proto-Celtic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.



Possibly from Proto-Indo-European *bʰrews- (belly, to swell); compare with English breast, Proto-Germanic *brunjǭ (breastplate), and Proto-Slavic *břȗxo (belly).[1] However, also compare Ancient Greek βρύω (brúō, to be full, bursting) and Sanskrit भ्रूण (bhrūṇa, embryo).[2]


*brusū f

  1. belly, abdomen
  2. breast


Masculine/feminine consonant stem
singular dual plural
nominative *brusū *brusne *brusnes
vocative *brusū *brusne *brusnes
accusative *brusnam *brusne *brusnams
genitive *brusnos *brusnou *brusnom
dative *brusnei *brusnobom *brusnobos
locative *brusni
instrumental *brusne? *brusnobim *brusnobis

Derived terms[edit]


  • Proto-Brythonic: *bronn (< genitive singular)
    • Old Breton: bronn
    • Cornish: bronn
    • Middle Welsh: bron
  • Old Irish: brú
    • Middle Irish: brú
      • Scottish Gaelic: brù


  1. ^ Matasović, Ranko (2009) “bruson-”, in Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, →ISBN, page 81
  2. ^ MacBain, Alexander, Mackay, Eneas (1911) “Proto-Celtic/brusū”, in An Etymological Dictionary of the Gaelic Language[1], Stirling, →ISBN, page brù