Where does “tonel” come from?

tonel (French) comes from Old French tone, from Late Latin tunna, from Proto-Celtic tunna — hide, skin.

Ancestry of “tonel”, step by step

StepLanguageWordMeaning
1Old Frenchtonelarge barrel
2Late Latintunnatun, box
3Proto-Celtictunnahide, skin
Every word from Proto-Celtic tunna →Every word from Late Latin tunna →Every word from Old French tone →
tonel — Etymology, Origin & Word History | Etymology Explorer