It refers to the country where something originates, be it:
* A person: The country they were born in.
* A product: The country where it was manufactured or produced.
* An idea or concept: The country where it originated.
Example:
* "What is your país de origen?" (What is your country of origin?)
* "This wine is from Chile, its país de origen." (This wine is from Chile, its country of origin.)