Entréname comes from the verb entrenar, meaning "to train". It's used here in the imperative form, meaning "train me".
In the song, the singer is so accustomed to his partner's presence that he feels he needs to be "trained" to live without her. He asks her to disappear so he can practice being alone, highlighting his deep dependence and the challenge of regaining his independence. This unique usage makes the word particularly striking.
Andrés Cepeda's "Un Ratito" is a really sweet and relatable song about someone who's become so used to being with their partner that they've almost forgotten how to be alone. It's not a sad breakup song, though! It's more about wanting to test the waters and see if they can still stand on their own two feet.
He sings, "Aléjate un poquito a ver / Qué pasa cuando estas / A más de 3 pasitos de mi piel" [Move away a little to see / What happens when you are / More than 3 little steps from my skin], suggesting a gentle experiment. He even proposes a funny little test: "Probemos tú ve por leche, yo por pan / Pero encontrémonos en la mitad" [Let's try, you go for milk, I'll go for bread / But let's meet in the middle]. He admits he's become a "sombra fiel" [faithful shadow] and needs to remember who he is without them. He wants to learn to live "Un ratito sin tu compañía" [A little while without your company], just to prove to himself that he can. It's a charming look at rediscovering independence within a relationship.