From Middle French douille, from Old French doile, doelle (“the hollow part of a tool where the handle is fixed”), from Old Frankish *dollī, *dullī (“hollow tube, pipe”), from Proto-Germanic *dulją (“pipe”), from Proto-Indo-European *dʰel- (“curvature, hollow”). Cognate with Old High German duli, tulli (“pipe”).
douille f (plural douilles)
- socket (electrical socket)
- cartridge case (unprofessinal; the correct term in the military is étui)
- (archaic) money