Its when some one attacks a specific IP Address in many cases sending a lot of large packets at once so that the IP Address can not handle all the incoming requests and crashes.

Cheaters on halo 3 use this technique to Host Boot or Standby people.
Dude this guy was DDoSiNg and he lagged me out of the game. I lost my rank.
by OMG iTz W July 28, 2009
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Dick dose; sending a overdose of dick pics
Kevin: Hey man wanna see my jimmy kimmel ;;)))
Bartholomew: ew no not another ddose again
by Mamishead April 28, 2015
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