Where does “roomboter” come from?

roomboter (Dutch) comes from Dutch boter, from Middle Dutch bōter, from Old Dutch butera, from Proto-West Germanic buterā, from Latin būtȳrum, from Ancient Greek βούτυρον, from Ancient Greek τυρός, from Proto-Hellenic tūrós — to swell; to crowd; to be strong.

roomboter (Dutch): butter, made by churning the cream of milk

Definitions

  1. butter, made by churning the cream of milk

Ancestry of “roomboter”, step by step

roomboter traces back through two separate lines of ancestry.

via Dutch boter

StepLanguageWordMeaning
1DutchboterButter, a spread made from churned milk; A butter...
2Middle Dutchbōterbutter
3Old Dutchbuterabutter
4Proto-West Germanicbuterābutter
5Latinbūtȳrumbutter
6Ancient Greekβούτυρονbutter
7Ancient Greekτυρόςcheese
8Proto-Hellenictūróscheese
9Proto-Indo-Europeantuh₂-ró-s
10Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

via Dutch room

StepLanguageWordMeaning
1Dutchroomcream
2Middle Dutchrôme
3Old Dutchrōm
4Proto-West Germanic*raumfilm, skin
5Proto-Germanicraumazskin; film; cream
6Proto-Indo-Europeanrew-to roar, growl, grumble; to roar; growl; grumble;...

Words derived from “roomboter

Every word from Proto-Indo-European tewh₂-
roomboter — Etymology, Origin & Word History | Etymology Explorer