Where does “rueb” come from?

rueb (Alemannic German) comes from Middle High German rüebe, from Old High German ruoba, from Proto-Germanic rōbǭ.

Ancestry of “rueb”, step by step

StepLanguageWordMeaning
1Middle High Germanrüebe—
2Old High Germanruobaturnip, rape; a number, multitude
3Proto-Germanicrōbǭ—
Every word from Proto-Germanic rōbǭ →Every word from Old High German ruoba →Every word from Middle High German rüebe →
rueb — Etymology, Origin & Word History | Etymology Explorer