Crossword Genius

Possible source of firing put poacher off (10)

Ross

I believe the answer is:

touchpaper

'possible source of firing' is the definition.
(flammable piece of paper)

'put poacher off' is the wordplay.
'off' is an anagram indicator.
'put'+'poacher'='putpoacher'
'putpoacher' is an anagram of 'TOUCHPAPER'.

(Another definition for touchpaper that I've seen is " it might result in fireworks".)

I've seen this clue in The Guardian.
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