Rebore

[Magaret]

Make a new or wider boring in (the cylinders of an internal combustion engine)

[Oralee]

A replica, [deactivated] gun or sometimes and air pistol which has been modified to allow it to shoot [live ammunition]. The term refers to the fact that [the guns] barrel has been re-bored (drilled out), as often deactivated weapons have had their barrels blocked with metal.
The term also refers to a copy or fake and can be used to describe a person or object which resembles another.
The origins of this word can be found in hip hop, rap and British grime music scenes and also in use on the inner-city streets of many towns in the UK and US.

[Britney]

Bore out (the cylinders of an internal combustion engine) again, typically in order to widen them.