Seaport on the Douro river (6)

I believe the answer is:

(Other definitions for oporto that I've seen before include "City near the mouth of the River Douro" , "Portugal's second city" , "Portuguese wine trade centre" , "Iberian city" , "European city" .)

I've seen this clue in the Thinks.com.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.