Descalzos literally means "barefoot". While a common word, its use in this song is beautifully poetic and uncommon, making it a memorable one to learn.
La Oreja de Van Gogh sings, "...era posible caminar descalzos por el tiempo" (it was possible to walk barefoot through time). This evocative phrase paints a picture of innocence, freedom, and a love so strong it felt like it could defy the laws of reality and time itself. It's a perfect example of how Spanish can create magical, romantic imagery.
This song is about the painful end of a relationship, when you know it's over but can't quite let go. The singer starts with a brutal test for her partner: "Si has tenido que pensar... Ese beso nació muerto" (If you had to think... that kiss was born dead). She's saying that if love isn't automatic and overwhelming, she doesn't want it. The feeling of loss is so deep that it's "de noche aquí en mi pecho" (night here in my chest), a darkness that daylight can't fix.
The chorus, "Abrázame... Que tengo miedo / A no volver" (Hug me... because I'm scared / of not coming back), is a desperate plea for comfort. It's a request for one last moment of closeness before everything ends for good. She remembers how beautiful it was to imagine they could "caminar / Descalzos por el tiempo" (walk / barefoot through time), but now she feels trapped on the ground, even with "dos alas para volar" (two wings to fly). The weight of their shared history and her lingering love is what holds her down.