(1) (noun) A number that identifies applications and services in a TCP/IP network. See
TCP/IP port,
port 80,
well-known port and
opening a port.
(2) (noun) A physical socket (jack) that accepts a plug. For example, cables are plugged into Ethernet ports, and cables and flash drives are plugged into USB ports. See
jack,
plugs and sockets,
legacy port,
port speed and
line card.
(3) (verb) To translate software to run in a different computer environment. For example, "port the application to Unix" means make the necessary changes in the program's source code so that it can be compiled and run under the Unix operating system.
(4) (verb) To switch a telephone number from one telephone carrier to another. See
LNP.