OE (e)twinn ＜ Gmc twisnaz (ON tvinnr double) ← IE dwisno- (L bn🔗⭐🔉

OE (e)twinn ＜ Gmc twisnaz (ON tvinnr double) ← IE dwisno- (L bn two each / Lith. dvyn twins) ← dwo- 'TWO': cf. twi-, twain twn xis

研究社新英和大辞典 ページ 230836 での【eON tvinnr double】単語。