Camping

camping, to camp, n., v., EverQuest-ism 1. in general usage, to live temporarily outdoors, in a place usually away from urban areas where tents or simple buildings (as cabins) are erected for shelter or for temporary residence (as for laborers, prisoners, or vacationers); Middle French, probably from Old North French or Old Provençal, from Latin campus "plain, field." 
2. (computer games) used by players of first person shooters to describe the act of finding a place to hide and/or shoot people from and staying there for quite some time, if not the whole damn game.
Ex: When playing Counterstrike, Michelle is a notorious camper. She'll sit under a table with an MP5 all game if you don't go in and get her. 
3. in Everquest, a command that will save your position when you quit so you will pop up at that place instead of your normal start point when you log back on. 4. in Everquest, to use the camp command at a place where you know a particular monster or NPC spawns so you can log off, go do something else (like go to work), and get back on right when you know it will repop.
Ex: Everybody was camping Bubba Bo Bob Brain! It took me three days until I got to kill him! [ME]
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Addendum to Definition #2: Camping is one of the most despised and widely-seen offenses in FPS games.