Décrocher literally means "to unhook" or "to take down". It's a common verb, but Céline Dion uses it in the beautiful and powerful French idiom décrocher la lune.
This phrase means "to achieve the impossible" or "to reach for the stars". In the song, she lists grand, impossible wishes like this one to contrast them with her one simple, heartfelt desire: to speak to her father again. This poetic expression makes décrocher a truly memorable word.
In this beautiful song, Céline Dion lists all the amazing things she'd like to do. She dreams of grand adventures and impossible feats, like crossing the ocean, going to unknown places, and even grander things: "Je voudrais décrocher la lune / Je voudrais même sauver la Terre" (I would like to unhook the moon / I would even like to save the Earth). She also wishes for quiet moments to reflect on her life, asking "Où est ma vie, où est ma place" (Where is my life, where is my place) and wanting to hold onto the precious memories of her past.
But all these huge ambitions and quiet wishes lead to one simple, powerful desire. After every dream, she returns to the one thing that matters most. More than anything else in the world, she says, "Mais avant tout / Je voudrais parler à mon père" (But above all / I would like to talk to my father). It's a deeply personal song about wanting one more conversation with a loved one who is gone, a wish that feels bigger than saving the world.