(uucp) A Unix utility program and protocol that allows one Unix system to send files to another via a serial line whICh may be a cable going directly from one machine' s serial port to another' s or may involve a modem at each end of a telephone line. Software is also available to allow uucp to work over Ethernet though there are better alternatives in this case, e.g. FTP or rcp for file transfer, SMTP for {electronIC mail} or {NNTP} for {news}. The term is now also used to describe the large international network whICh uses UUCP to pass Usenetnews and electronIC mail, also known as "UUCPNET". Unix manual page: uucp(1). See also cu, uuencode. (1997-01-12)