douille

From Middle French douille, from Old French doile, doelle (“the hollow part of a tool where the handle is fixed”), from 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”).

• IPA^(key): /duj/

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douille f (plural douilles)

1. socket (electrical socket)
2. cartridge case (unprofessional; the correct term in the military is étui)
3. (archaic) money

• clé à douille

• “douille”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.