Where does “bough” come from?

bough (Middle English) comes from Old English bōg, from Proto-Germanic bōguz, from Proto-Indo-European bʰāǵʰus — arm.

Ancestry of “bough”, step by step

StepLanguageWordMeaning
1Old Englishbōgarm; shoulder; bough
2Proto-Germanicbōguzupper arm, shoulder
3Proto-Indo-Europeanbʰāǵʰusarm

Words derived from “bough”

Every word from Proto-Indo-European bʰāǵʰus →Every word from Proto-Germanic bōguz →Every word from Old English bōg →
bough — Etymology, Origin & Word History | Etymology Explorer