Potranca literally translates to "filly" or a young female horse. It's a vivid and somewhat unusual word to feature so prominently in a song, making it memorable.
In this song, the artist uses "potranca" metaphorically to describe a woman who is wild, untamed, and believes herself to be superior and uncontrollable, much like a spirited horse. The song's narrative revolves around the singer's challenge to "tame" this "filly," adding a layer of playful bravado and a unique cultural reference to the lyrics.
Yeison Jiménez's "Potranca De Corral" is a feisty song where he takes on someone who thinks they're a wild, untamable horse. He sings, "Te crees potranca desbocada en la llanura / Que eres más bella y más hermosa que ninguna" [You think you're a wild mare galloping on the plain / That you are more beautiful and gorgeous than any other]. This person believes no one can control their beauty or their fiery spirit.
But Yeison isn't impressed! He confidently states that he's faced similar challenges before, and he's got the skills to handle them. He bluntly declares, "Pa' mi sos mansa potranquita de corral" [For me, you're just a tame little stable mare]. He sees through the act, suggesting that while they might try to test him, they'll eventually fall into line. He even says, "Hasta sin freno y sin apero, se han dejado acariciar" [Even without a bridle and without tack, they've let themselves be caressed], implying that even the most stubborn have eventually given in to his charm.