Top Definition
A car which you own purely for the purpose of driving it around tracks at high revs. Not to be used for driving your family around in or commuting to work.

The car may be a sporty model or have performance-enhancing modifications.
Guy #1: I'd love to get another car to drive at track days so that I could just use my current car to drive around normally and not have to worry about it damaging it when I go ragging it around tracks.
Guy #2: You mean like a track slag?
Guy #1: Exactly!
by Oletha February 18, 2011
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