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noun 
  1. A gravitationally domineering celestial body with an event horizon from which even light cannot escape; the most dense material in the universe, condensed into a singularity, usually formed by a collapse, collapsing massive star.
  2. A sphere of influence into which or from which communication or similar activity is precluded.
    • 2006 October 23, Tom Zeller Jr., "The Internet Black Hole That Is North Korea", The New York Times
    • : Julien Pain, head of the Internet desk at Reporters Without Borders, a Paris-based group which tracks censorship around the world, put it more bluntly. "It is by far the worst Internet ," he said.
    • 2000 November 26, Linda Seebach, "Unwanted e-mail belongs in an Internet ", RockyMountainNews?.com http://rockymountainnews.com/seebach/1126seeba.shtml
    • :you'll have to love U.S. District Court Judge John Kane's decision to keep Denver-based Exactis.com out of an Internet .... MAPS maintains a database of Internet addresses that it believes send or relay spam. It's called the "Realtime Blackhole List"
      1. An entity which consumes time or resources without demonstrable utility.
    • 2004 September 30, Andrew P. Leyden, "The Internet ", PenguinSix?, at <tt>PenguinSix?.com</tt> http://www.penguinsix.com/blog/archives/2004/09/the_internet_bl.html
    • : Now that I'm basically up all night US Time, I've started to notice that there really isn't that much going on on the net between say 10:00 and 9:00 AM EDT.
    • 2004 November 16, Jenifer Hanen, "How I fell down an Internet Black Hole....", Black Phoebe, at <tt>www.blackphoebe.com</tt> http://www.blackphoebe.com/msjen/archives/2004/11/how_i_fell_down.html
    • :I finished some client work and gave myself 30 minutes to fall down one of my favorite internet black holes: genealogical research. Four hours plus some later, my eyes were burning in my head
Translations: 
  • Dutch: zwart gat
  • French: trou noir
  • German: schwarzes Loch
  • Italian: buco nero
  • Spanish: agujero negro

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