Crossword Genius

Match a barge (7)

Ross

I believe the answer is:

lighter

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

'a barge' is the definition.
(synonyms)

'match' is the wordplay.
I cannot really see how this works, but
'match' could be 'light' (I've seen this before) and 'light' is found within the answer.
The remaining letters 'er' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for lighter that I've seen before include "Ship to shore boat" , "carrying less weight" , "Canal boat with a flat bottom" , "less tonnage" , "Smoking accessory" .)

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