2
When you need to go somewhere for whatever reason, and you don't want to be there on your own, so you get a few (or one) of your friends to come with you so it looks like you have friends.
Hey man, I need to go to the bowling alley, can you be my backing?
by Thegreatnick July 25, 2006
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3
(Uk Slang)

To back is to aquire.
Blood, dem trainers are live, I'm gonna back a pair.

Lee did you remember to back your car keys?
by Dr Sk November 23, 2004
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