American English

Definition of billet-doux noun from the Oxford Advanced American Dictionary

 

billet-doux

 noun
noun
NAmE//ˌbɪli ˈdu//
 
, NAmE//ˌbɪleɪˈdu//
 
(pl. billets-doux
NAmE//ˌbɪli ˈduz//
 
, NAmE//ˌbɪleɪˈduz//
 
, NAmE//ˌbɪliˈdu//
 
, NAmE//ˌbɪleɪ ˈdu//
 
)
(from French) (humorous or )
 
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(literary) a love letter
See the Oxford Advanced Learner's Dictionary entry: billet-doux