Crossword Genius

Burn up the track (6)

Ross

I believe the answer is:

scorch

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'burn' is the definition.
(scorch is a kind of burn)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for scorch that I've seen before include "Burn; drive very fast (informal)" , "career" , "Get browned off" , "go very fast" , "Burn on the surfaces" .)

I've seen this clue in the Evening Standard.
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