Nerf — When Blizzard reduces or eliminates some power or ability in a patch. (”They really nerfed the warrior last push.”)

Carebear — A player who likes to help other players kill monsters.

AH — Auction House

BoA — Bind on Acquire; refers to items that are bound to the player picking them up, meaning that he can’t give them to someone else, although he can sell them.

Newbie — A new player, or one who isn’t very good. Sometimes shortened to newb, noob, or even n00b. Typically overused in most online games and, as a consequence, avoided by veteran players.