Where does “knolraap” come from?

knolraap (Dutch) comes from Dutch raap, from Middle Dutch rape, from Latin rāpum, from Proto-Indo-European rap-.

knolraap (Dutch): turnip, cultivated plant with edible white root,...

Definitions

  1. turnip, cultivated plant with edible white root,...

Ancestry of “knolraap”, step by step

knolraap traces back through two separate lines of ancestry.

via Dutch raap

StepLanguageWordMeaning
1Dutchraapturnip; noggin, bonce
2Middle Dutchrape
3Latinrāpumturnip
4Proto-Indo-Europeanrap-

via Dutch knol

StepLanguageWordMeaning
1Dutchknoltuber; bulge, protrusion; nag, inferior horse
2Old Englishcnollsummit
3Proto-Germanicknudan-
Every word from Proto-Indo-European rap-