Starts fire or hits one double (7,1,5)

I believe the answer is:

strikes a match

I'm a little stuck... Click here to teach me more about this clue!

'starts fire' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'hits one double' is the wordplay.
'hits' becomes 'strikes' ('strike' can be a synonym of 'hit').
'one' becomes 'a' (a thing is one thing).
'double' becomes 'match' (match can mean double or duplicate).
'strikes'+'a'+'match'='STRIKES A MATCH'

'or' is the link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.