A person who overuses the Battlerifle, usually used in Halo 2. Since the auto update's modification to the BR (battlerifle), it has been way to powerful and led to this term. The word 'whore' can actually be put after any weapon, escpecially rockets or sword.
"w00t. These guys suc...ugh...that Battlerifle whore shot me."
-Why did you betray him.
-He was a BR whore.
-Ohh. Okay.
any female that is homeless that goes to bar to find someone willing to buy them drinks and then asks for a place to stay for the night. may or may not include sex as a hobo whore generally passes out before the act can take place.
"DUDE, don't buy that hobo whore more drinks, she'sjust going to pass out and accuse you of rape!"