birader
From Ottoman Turkish برادر (birâder), from Persian برادر (barâdar, berâdar). Cognate with English brother.
birader (definite accusative biraderi, plural biraderler)
From Proto-Iranian (compare Persian برادر (barâdar), Balochi برات (barát), Ossetian ӕрвад (ærvad), Avestan 𐬠𐬭𐬁𐬙𐬀𐬭 (brātar-)), from Proto-Indo-Iranian *bʰrā́tar- (compare Sanskrit भ्रातृ (bhrātṛ), Hindi भ्राता (bhrātā)), from Proto-Indo-European *bʰréh₂tēr (compare Russian брат (brat), Latin frāter, Irish bráthair, English brother).