Billet-doux
Pronunciation : Bil`let-doux"
Part of Speech : n.;
Etymology : [F. billet note + doux sweet, L. dulcis.]
Definition : Defn: A love letter or note. A lover chanting out a billet-doux. Spectator.
pl. Billets-doux.
Source : Webster's Unabridged Dictionary, 1913