from The American Heritage® Dictionary of the English Language, 4th Edition
- A city of northwest Portugal near the mouth of the Douro River north of Lisbon. Probably of pre-Roman origin, it was captured by the Moors in 716. Its wine trade was established in 1678. Population: 263,000.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. The second-largest city of Portugal.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. port city in northwest Portugal; noted for port wine
From Portuguese o ("the") + Porto ("Oporto"), from porto ("port; harbour"). (Wiktionary)