bananų vaisius

I'm sorry, but "bananų vaisius" does not appear to be a Spanish word or phrase. It seems to be a mix of Lithuanian ("bananų vaisius" translates to "banana fruit" in English). If you meant to refer to the Spanish word for "banana," which is "plátano" or "banana," I can provide definitions for those. Please confirm or clarify your request. tuntematon