Where does “butterfly nut” come from?

butterfly nut (English) comes from English Butterfly, from Middle English boterflye, from Old English buterflēoge, from Old English butere, from Proto-West Germanic buterā, from Latin būtȳrum, from Ancient Greek βούτυρον, from Ancient Greek τυρός — to swell; to crowd; to be strong.

butterfly nut (English): A nut with wing-like projections to provide...

Definitions

  1. A nut with wing-like projections to provide...

Ancestry of “butterfly nut”, step by step

butterfly nut traces back through two separate lines of ancestry.

via English Butterfly

StepLanguageWordMeaning
1EnglishButterflyA flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring
2Middle Englishboterflyebutterfly; Something of little import or value; A...
3Old Englishbuterflēogebutterfly
4Old Englishbuterebutter
5Proto-West Germanicbuterābutter
6Latinbūtȳrumbutter
7Ancient Greekβούτυρονbutter
8Ancient Greekτυρόςcheese
9Proto-Hellenictūróscheese
10Proto-Indo-Europeantuh₂-ró-s
11Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

via English Nut

StepLanguageWordMeaning
1EnglishNutThe goddess who serves as the personification of the sky
2Middle Englishnotenote; Alternative form of not
3Old Englishnotuuse; enjoyment; profit, advantage, utility
4Proto-Germanicnutōuse, profit, yield
5Proto-Indo-Europeannewd-to seize; grasp; use; to grasp, seize, use; to...
Every word from Proto-Indo-European tewh₂-Every word from Proto-Indo-European tuh₂-ró-sEvery word from Proto-Hellenic tūrós