halo n00b Share definition Flag Someone who plays halo or halo 2, the 2 worst games of all time, and doesn't play Counter-Strike, the l33test game of all time. Yeah, John's a halo n00b, but i just showed him CS and he loved it. halo n00b by Sidnatius December 13, 2008 0 0 Get merch Get the halo n00b mug. Buy Now — $32.95 See more merch