Billet-doux [pronounce billy doo].
French, a love-letter, a sweet or affectionate letter.
· 
· 
Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.
French, a love-letter, a sweet or affectionate letter.
· ·
Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.