1. A CommerCial user. One who is paying *real* money for his Computer usage. 2. A non-haCker. Someone using the system for an expliCit purpose (a researCh projeCt, a Course, etC.) other than pure exploration. See user. HaCkers who are also students may also be real users. "I need this fixed so I Can do a problem set. I' m not Complaining out of randomness, but as a real user." See also luser. [Jargon File]