Definition of port noun from the Oxford Advanced Learner's Dictionary

  1. 1  [countable] a town or city with a harbour, especially one where ships load and unload goods fishing ports Rotterdam is a major port. See related entries: Coastlines and the sea, Travelling by boat or ship
  2. 2  [countable, uncountable] (abbreviation Pt.) a place where ships load and unload goods or shelter from storms a naval port The ship spent four days in port. They reached port at last. port of entry (= a place where people or goods can enter a country) see also airport, free port, heliport, seaport See related entries: Coastlines and the sea
  3. 3 (also port wine) [uncountable] a strong sweet wine, usually dark red, that is made in Portugal. It is usually drunk at the end of a meal.
  4. 4 [countable] a glass of port
  5. 5[uncountable] the side of a ship or aircraft that is on the left when you are facing forward the port side compare starboard See related entries: Parts of boats and ships, Boating
  6. 6[countable] (computing) a place on a computer where you can attach another piece of equipment, often using a cable the modem port See related entries: Computer hardware
  7. Word Originnoun senses 1 to 2 Old English, from Latin portus ‘haven, harbour’, reinforced in Middle English by Old French. noun senses 3 to 4 shortened form of Oporto, a major port in Portugal from which the wine is shipped. noun sense 5 mid 16th cent.: probably originally the side containing an entry port or facing the port (quayside) for loading. noun sense 6 Old English (in the sense ‘gateway’), from Latin porta ‘gate’; reinforced in Middle English by Old French porte. The later sense ‘opening in the side of a ship’ led to the general sense ‘opening’.Extra examples Foreign visitors are fingerprinted at the port of entry. Our next port of call was Bermuda. She tried to steer the boat into port. The vessel reached port the next morning. My first port of call in town was the bank. The ship spent four days in port. There was a spontaneous welcome for anyone who put into port on the island. a fishing/​naval/​container/​ferry port a port city/​town a port of entry the German port of KielIdioms (saying) if you are in great trouble, you take any help that is offered
See the Oxford Advanced American Dictionary entry: port