Crossword Genius

Accident that can start a fire (5)

Ross

I believe the answer is:

spill

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'accident' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

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(Other definitions for spill that I've seen before include "Thin piece of wood used to light a fire" , "Shed" , "Waste (liquid)" , "Cause liquid to overflow" , "Waste from container" .)

I've seen this clue in the Evening Standard.
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