Fits together bits of wood for starting fires (7)

I believe the answer is:

matches

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'fits' is the definition.
(I know this)

I don't understand how the remainder of the clue works.

(Other definitions for matches that I've seen before include "(Football) contests" , "strikers found in the box?" , "Shares a colour with" , "Sporting occasions" , "ties" .)

I've seen this clue in The Globe and Mail.

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