Where does “hreof” come from?

hreof (Middle English) comes from Proto-Germanic hreubaz, from Proto-Indo-European kreup- — scab, crust.

Ancestry of “hreof”, step by step

StepLanguageWordMeaning
1Proto-Germanichreubazrough, crusty, scabby
2Proto-Indo-Europeankreup-scab, crust
Every word from Proto-Indo-European kreup- →Every word from Proto-Germanic hreubaz →