Top Definition
Fiber-optic cables that have been laid but aren't yet in use
Anyone else concerned how Google is buying up all the dark fiber?
by Washed Heathen August 30, 2005
The large quantity of information, time, and effort wasted in large bureaucratic organizations to fulfill petty changes that will likely never come into use.
The dark fiber at Advance Auto Parts cost the company millions in capital per year.
by emptypepsican July 21, 2008
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