Where does “bolster” come from?

Bolster comes from Middle English bolstre, from Old English bolster, from Proto-Germanic bulstraz, ultimately from Proto-Indo-European bʰel-.

bolster (English): A large cushion or pillow; A pad, quilt, or...

Definitions

  1. A large cushion or pillow; A pad, quilt, or...

Ancestry of “bolster”, step by step

bolster traces back through two separate lines of ancestry.

via German polster

StepLanguageWordMeaning
1Germanpolsterpad, padding
2Middle High Germanpolster
3Old High Germanpolstar
4Old Norsebólstrbolster, pillow
5Proto-Germanicbulstrazbolster, pillow, cushion
6Proto-Indo-Europeanbʰelǵʰ-to swell
7Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
8Proto-Indo-Europeanbʰōl-

via Middle English bolster

StepLanguageWordMeaning
1Middle EnglishbolsterA soft stuffed bag to lie or lean on; a cushion...
2Old Englishbolsterpillow

Words derived from “bolster

Every word from Proto-Indo-European bʰōl-Every word from Proto-Indo-European bʰel-Every word from Proto-Indo-European bʰelǵʰ-
bolster — Etymology, Origin & Word History | Etymology Explorer