An Etymological Dictionary of the German Language/Brünne

by Friedrich Kluge

Brünne, f., recently borrowed from the equiv. MidHG. brünne (OHG. brunna), f., ‘breastplate’; comp. Goth. brunjô (whence OFr. brunie), OIc. brynja, AS. byrne; not from brennen; the appellations ‘glowing, shining,’ scarcely suit the earlier leather breastplates. OIr. bruinne, ‘breast,’ is more probably allied. From Teut. are borrowed OFr. broigne and OSlov. brŭnja, ‘coat of mail.’