Matthew's trousers (5)

I believe the answer is:

levis

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'matthew's trousers' is the definition.
'levis' can be an answer for 'trousers' (levis is a kind of trousers). I am not certain of the 'matthew's' bit.

'matthew's trousers' is the wordplay.
'matthew' becomes 'levi' ('Levi' can be a synonym of 'matthew').
'trousers' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'levi'+'s'='LEVIS'

Can you help me to learn more?

(Another definition for levis that I've seen is " Jeans".)

I've seen this clue in The Telegraph.

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