Where does “Butterfliege” come from?

Butterfliege (German) comes from German butter, from Middle High German buter, from Old High German butira, 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.

Ancestry of “Butterfliege”, step by step

Butterfliege traces back through two separate lines of ancestry.

via German butter

StepLanguageWordMeaning
1Germanbutterinflection of buttern: ## first-person singular...
2Middle High Germanbuterbutter
3Old High Germanbutirabutter
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 German fliege

StepLanguageWordMeaning
1Germanfliegeinflection of fliegen: ## first-person singular...
2Middle High Germanfliege
3Old High Germanfliogafly
4Proto-Germanicfleugǭflying insect, fly
5Proto-Germanicfleuganąto fly
6Proto-Indo-Europeanplewk-to fly, flow, run; to splash, to flap with hands
7Proto-Indo-Europeanplew-to fly, flow, run
Every word from Proto-Indo-European tewh₂-