billet–doux

play
noun bil·let–doux \ˌbi-lē-ˈdü, ˌbi-(ˌ)lā-\

Definition of billet–doux

plural

billets–doux

play \-ˈdü(z)\
  1. :  a love letter

Origin and Etymology of billet–doux

French billet doux, literally, sweet letter

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