Where does “acorn nut” come from?

acorn nut (English) comes from English acorn, from Old English æcern, from Proto-West Germanic *akran, from Proto-Germanic akraną, from Proto-Indo-European h₂ógeh₂ — small fruit ~ berry; berry, fruit.

acorn nut (English): A closed nut having a dome-like cap over the rear...

Definitions

  1. A closed nut having a dome-like cap over the rear...

Ancestry of “acorn nut”, step by step

acorn nut traces back through two separate lines of ancestry.

via English acorn

StepLanguageWordMeaning
1EnglishacornThe fruit of the oak, being an oval nut growing...
2Old Englishæcernacorn; tree mast
3Proto-West Germanic*akran
4Proto-Germanicakranąacorn
5Proto-Indo-Europeanh₂ógeh₂small fruit ~ berry; berry, fruit

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 h₂ógeh₂Every word from Proto-Germanic akranąEvery word from Proto-West Germanic *akran