pronounced noob-OC-ity not noob-OH-city
The measure of one being a noob, noob being one who is new at something and has no idea what is going on. Most used in the gaming word.
A mass pwntage of n00bs. Often used in FPS to describe killing a large team of camping nubs with a grenade or air strike. To exterminate all noobs.
Alternate meaning: to kill a large group of enemies using n00b tactics such as a n00b tube.