1. A town or city where sea vessels stop to load and to unload cargo: The Los Angeles port receives a great deal of goods for distribution to the rest of the United States.
2. A part of a computer in which a cable is inserted so a user can connect another piece of equipment: Bert placed a connection to his printer in the right port of his computer.
3. The side of a ship or aircraft which is on the left side when a person is looking toward the front: The part that is the opposite of the right side of a ship, called the "starboard", is known as the port side.

4. An aperture in the wall of a building or vehicle typically used for the discharge of weapons or for looking through: When the ship came into harbor, Victoria peeked through the port of her quarters to look at the buildings on the shore.

To hold, or to carry, a weapon (gun or sword) diagonally across the body, with the muzzle or blade near the left shoulder: "During the military parade, Thomas noted everyone ported their weapons in port diagonally across their bodies, with the muzzles or blades near the left shoulder."