Where does “tannin” come from?

tannin (French) comes from Latin tannum, from Gaulish tannos, from Proto-Celtic tannos, from Proto-Indo-European dʰonu — fir.

Ancestry of “tannin”, step by step

StepLanguageWordMeaning
1Latintannumoak bark
2Gaulishtannos—
3Proto-Celtictannosgreen oak
4Proto-Indo-Europeandʰonufir

Words derived from “tannin”

Every word from Proto-Indo-European dʰonu →Every word from Proto-Celtic tannos →Every word from Gaulish tannos →