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]