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1.
A person, usually referred to while playing CoD, as being garbage at the game.

Also used when you can't think of any other words to discribe someone else but just a scrub.
Him: OMG i just got a Harrier
Them: STFU scrub that takes no skill
Him: Mommy they called me a scrub!
Them: ....
Random guy: SCRUB!
Him: =(
by Scrub killer April 08, 2011