late OE rt ← ? Gmc rattn (Du. rat / G Ratz, Ratte) ← ? IE rd🔗⭐🔉

late OE rt ← ? Gmc rattn (Du. rat / G Ratz, Ratte) ← ? IE rd- to scrape, gnaw (L rdere to scrape): cf. ratton^１ rat^２ /rt/

研究社新英和大辞典 ページ 216324 での【Du. rat / G Ratz, Ratte】単語。