In Spanish, 'merquén' is not a slang term. It actually refers to a traditional condiment or spice blend from the Mapuche culture of Chile. It's a mix of dried and smoked red chili peppers, coriander seeds, cumin and salt.
Examples
- Spanish: Voy a agregar un poco de merquén a este guiso para darle más sabor.
- English: I'm going to add some merquén to this stew to give it more flavor.