A player in Call of Duty 4 online that uses the Juggernaut perk. Their health is increased, making them harder to kill. Anyone who uses this perk is considered a n00b and is looked down upon.
Thief11 killed me before I could kill him; he was using Juggernaut. What a juggernoob.
Juggernoob, also Juggernaut Noob - refers to the recent Call of Duty 4 and more recently Call of Duty: World at War. Refers to players who when creating a custom class online in multiplayer, apply the Juggernaut as one of their three perks in the class. Juggernaut adds much increased health to said player and makes it much more difficult to kill, thus resulting in much, much annoyance by 99.99% of the population playing the game.
"oh my god that juggernoob, it took a whole clip and a half to kill him!"
"stupid pussy using juggernaut, he's such a total juggernoob"