Old High German rucki

← Old English hryċġ (cognate)

← English ridge (cognate)

← Proto-Germanic *hrugjaz (inherited)

← Old Norse hryggr (cognate)

→ Old English hrycg (cognate)

→ German Rücken (inherited)

→ Luxembourgish Réck (inherited)

→ Old Norse hryggr (cognate)

→ Yiddish רוקן (inherited)