n. a user of IBM computers; one who is knowledgeable about IBM computers. (See also beemer.) : I'm no beamer! I'm a Mac fan.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Computing Dictionary
beamer definition
video, hardware, communications A personal video station (PVS) that adds video to standard telephone lines at no additional cost. (1999-10-24)