(1) (n.) In networking, a hardware or software unit that is in the same protocol layer as another unit.(2) (n.) In Point-to-Point Protocol (PPP), an individual computer at one end of a PPP communications link, which consists of two peers that are connected by communications media. You can configure many types of computing equipment as a peer, such as a workstation, personal computer, router, or mainframe.

the PPP implementation at the other (far) end of the link.

a computation environment which is external to ECLiPSe, either in the sense of being a different computer language or being a different process, possibly on a different machine

a computer which is at the same time a client and a server

an implementation of the same protocol in the equivalent layer on a remote computer

The actual implementation of a GUI component on a specific platform. Peer components reside within a Toolkit object. See Toolkit.