Clavo literally means "nail", like the kind you hammer. However, in this song, it's used in a very common Spanish idiom: "un clavo saca otro clavo" which means "one nail drives out another nail".
This idiom is the Spanish equivalent of "the best way to get over someone is to get under someone new" or "fight fire with fire". The singer is telling the person that he is the "clavo" (the new person) who will help her forget her ex-boyfriend (the old "clavo"). It's a clever and enticing double meaning that's central to the song's theme.
El Clavo [Remix] is a bold, feel-good rescue mission set to a contagious Latin beat. Prince Royce and Maluma step in as the nuevo clavo—the “new nail” that yanks out the old one—telling a woman she deserves far better than her careless, late-night-drunk-dialing boyfriend. Their message is clear: “You’re not alone; roll with us and we’ll treat you right.”
Playful swagger, spicy humor, and unapologetic flirtation drive the lyrics, from offering up their Grammys to promising VIP care. The song flips a breakup into a party of self-worth, urging listeners to ditch toxic love and dance toward something fun, respectful, and thrilling.