verb/de.ʒœ.ne/
to lunch, to eat lunch, to have lunch; to have breakfast
From dé- + jeûner (“un fast (to break fast)”) or from a Vulgar Latin *disieiūnāre, from Late Latin ieiūnāre, from Latin ieiūnus. Compare Catalan dejunar, Spanish desayunar, Italian digiunare, Occitan dejunar, Portuguese desjejuar. Doublet of dîner from which English dine descended.