What does cuarto de los mean in Spanish?

"Cuarto de los" doesn't have a specific meaning in Spanish. It's a grammatically incorrect phrase.

Let's break down why:

* Cuarto: This means "room" or "fourth" depending on context.

* De: This means "of" or "from."

* Los: This means "the" (masculine plural).

You need something after "los" to complete the phrase. For example:

* Cuarto de los niños: "The children's room"

* Cuarto de los invitados: "The guest room"

* Cuarto de los libros: "The book room/library"

So, to understand what you mean, we need more context. What were you trying to say?