Definition of port

To move documents, graphics, and other files from one computer to another.

To change a program in order to be able to run it on a different computer.

A hardware- or software-based interface used to transfer information between a computer and other devices. Hardware ports are physical connections that are visible on the outside of the computer. Software ports are the numbered gateways in programs that software programs use to exchange information.

An actor’s interface component through which actors communicate with other actors.

An inbound or outbound service endpoint that binds a communications protocol and data contract with a network address.

A socket on the back (usually) of a computer which allows you to plug in extra hardware such as a printer or modem.

Ports can be classified as hardware ports or network (software) ports. Hardware ports consist of the outlets on the computer where cables or plugs connect. Examples include USB, SCSI and Ethernet ports.