(Probably from ad-agency tradetalk, "house freak") A hacker occupying a technical-specialist, R&D, or systems position at a commercial shop.A really effective house wizard can have influence out of all proportion to his/her ostensible rank and still not have to wear a suit.Used especially of Unixwizards.The term "house guru" is equivalent.[Jargon File](1995-02-16)