Etymology

From Proto-Iranian [Term?] (compare Avestan 𐬠𐬭𐬁𐬙𐬀𐬭 ‎(brātar)), from Proto-Indo-Iranian *bʰrā́tar- (compare Sanskrit भ्रातृ ‎(bhrātṛ), भ्राता ‎(bhrātā)) Proto-Indo-European *bʰréh₂tēr (compare Ancient Greek φράτηρ ‎(phrátēr), Latin frāter, Old Church Slavonic братръ ‎(bratrŭ), Old Irish bráthair, Old Norse bróðir and Old English brōþor (English brother).