billet-doux
noun/ˌbɪleɪ ˈduː/
/ˌbɪleɪ ˈduː/
(plural billets-doux
(from French, humorous or literary)/ˌbɪleɪ ˈduːz/
/ˌbɪleɪ ˈduːz/
)- a love letterWord Originlate 17th cent.: French, literally ‘sweet note’.
Check pronunciation:
billet-doux