"Milord" (French pronunciation: [milɔʁ]) or "Ombre de la Rue" [ɔ̃bʁə də la ʁy] ("Shadow of the Street") is a 1959 song (lyrics by Georges Moustaki, music by Marguerite Monnot), famously sung by Édith Piaf.
It is a chanson that recounts the feelings of a lower-class "girl of the port" (fille du port, perhaps a prostitute) who develops a crush on an elegantly attired apparent upper-class British traveller (or "milord"), whom she has seen walking the streets of the town several times (with a beautiful young woman on his arm), but who has not even noticed her.
Nonetheless, when she talks to him of love, she breaks through his shell; he begins to cry, and she has the job of cheering him up again.
In connection with the film about Edith Piaf, La Vie en Rose (2007), Moustaki talked in an interview with Le Nouvel Observateur (14 February 2007) about "Milord": "It was a song I had left in draft form until one day I found the scribbled sheet next to the typewriter Piaf had given me.
When, at the start of the film, she says: "I'm going to record the big con's song", and she sings "Milord", it's vexing but probable.