Ailes means "wings" in French. It's a beautiful and poetic word that immediately evokes images of freedom, flight, and aspiration.
In the song, the lyric "Pour te laisser tes ailes / Faudra couper les miennes d'abord" (To let you keep your wings / I'd have to cut mine first) uses "ailes" metaphorically. It powerfully conveys a parent's ultimate sacrifice and unconditional love, expressing the desire to protect their child's freedom and potential, even at their own expense. This makes it a deeply moving and memorable word.
This song is a beautiful and moving letter from a father to his daughter... who hasn't even been born yet! Joseph Kamel sings directly to his future child, asking, "Dis, comment tu t'appelles? / Ma fille qui n'existe pas encore" (Tell me, what's your name? / My daughter who doesn't exist yet). He imagines her arriving in a world that isn't perfect, admitting "Le monde est pas le plus beau des décors" (The world isn't the most beautiful scenery), but he finds hope in her future existence.
He makes a series of powerful promises to this future person. He vows to protect her freedom, declaring that to stop her from flying, "Faudra couper les miennes d'abord" (They'll have to cut my wings first). The whole song builds around the idea of her unique perspective, her gaze. He believes that "dans ton regard / Il y aura ce que les autres n'ont pas" (in your gaze / There will be what others don't have), and he would give up everything he has just to see it. It's a song full of hope, love, and a father's fierce dedication, all for someone he's only dreaming of.