› [C or U] TRANSPORT an area of water and the land and buildings surrounding it, where ships can take on and off goods and passengers: Ports along the Mississippi River handle 56 percent of the nation's grain shipments. come into/leave port Officials moved to stop the ship from leaving port. port officials/security › [C] TRANSPORT a town that has such an area: important East-Coast ports such as Baltimore › [C] IT a part of a computer where you can connect another piece of equipment, such as a printer or screen: A DVI monitor port lets you connect a digital LCD monitor. → See also free port, home port, parallel port, serial port