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heavy metal definition - telecom
  1. Also known as big iron. The colloquial term for early generations of mainframe computers, PBXs, and central offices (COs). Prior to the advent of electronic common control (ECC) and miniaturized semiconductor circuitry, such systems contained a lot of metal and were quite heavy, indeed. Fans of heavy metal are known as old computer guys. See also forklift upgrade and mainframe computer.
  2. A subgenre of really loud rock music dominated by really loud drums and really loud guitars, strong really loud rhythms, and a really loud bluesy style played by really loud bands like Iron Butterfly, Iron Maiden, Led Zeppelin, and Metallica. Fans of heavy metal are known as head bangers and metalheads.

Webster's New World Telecom Dictionary Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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