Colmillos are "fangs," the sharp, pointed teeth famously associated with vampires. It's a visually powerful word that you won't encounter in everyday conversation, making it a memorable addition to your vocabulary.
In the song, which is titled "VAMPIROS," ROSALÍA and Rauw Alejandro use this word to build their dark, nocturnal theme. The line "Colmillos afilado de metales" (Sharp fangs of metal) creates a modern and edgy image, perfectly capturing the cool and dangerous vibe of the track.
ROSALÍA and Rauw Alejandro team up to paint a picture of themselves as a modern, immortal power couple, living a wild nightlife. They compare themselves to vampires, saying they are one of a kind: "Como tú y yo no hay iguales" (Like you and me there are no equals). They are creatures of the night who "Salimos de noche, llegamos de día" (go out at night and arrive by day), completely unbothered by what anyone else thinks about them.
They see themselves as an unstoppable force. ROSALÍA calls herself a pistol that "No tiene seguro, se dispara sola" (has no safety, it fires on its own) and declares she's not a follower, but "la ola" (the wave). The whole song feels like we're riding with them through the city after dark, with the moon as their guide and a sense of being invincible and eternal. They are "Vampiros sonando ahora para siempre, somos inmortales" (Vampires sounding now forever, we are immortal).