Where does “bun” come from?

bun (Old Irish) comes from Proto-Celtic bonus, from Proto-Indo-European bʰuH- — to become, grow, appear.

bun (Old Irish): base; bottom; butt

Definitions

  1. base; bottom; butt

Ancestry of “bun”, step by step

StepLanguageWordMeaning
1Proto-Celticbonusfoundation, base, butt
2Proto-Indo-EuropeanbʰuH-to become, grow, appear

Words derived from “bun”

Every word from Proto-Indo-European bʰuH- →Every word from Proto-Celtic bonus →
bun — Etymology, Origin & Word History | Etymology Explorer