hlýrinafnorðkarlkyna, m., poët. a brother, frater germanus, only in poets, Lex. Poët. passim; perhaps orig. a ‘twin-brother.’Skammstafanir og tilvitnanirm.karlkyn (e. masculine)poët.poetically.Lex. Poët.Lexicon Poëticum by Sveinbjörn Egilsson, 1860.