billet-doux
nounNAmE//ˌbɪli ˈdu//, NAmE//ˌbɪleɪˈdu//
(pl. billets-doux NAmE//ˌbɪli ˈduz//, NAmE//ˌbɪleɪˈduz//, NAmE//ˌbɪliˈdu//, NAmE//ˌbɪleɪ ˈdu//
) (from French) (humorous or )Definitions on the go
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