"Gulosa" is a Portuguese term that translates to "throat" in English. In the context of porn video tags, it refers to specific sexual acts or scenes involving oral sex, particularly when a person performs fellatio on a man's penis. It emphasizes the act being focused on the throat area and deep-throating techniques. Note that this term is not widely used in the English-speaking adult industry but might be found in videos catering to multilingual audiences or with international content creators.