The network card on a computer is sometimes casually called network interface.
The point of interconnection between the public switched network[?] and a privately owned terminal. In the USA, Code of Federal Regulations, Title 47, part 68, stipulates the interface parameters.
The point of interconnection between one network and another network.
... EAP prototype which had first flown in 1986, and culminating in the first flight of the Typhoon prototype in 1994 (then just known as the Eurofighter EF 2000). ...