Don Lycra trousers and nothing more besides (4)

I believe the answer is:

only

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'nothing more besides' is the definition.
I can't tell whether this definition defines the answer.

'don lycra trousers' is the wordplay.
'trousers' indicates the answer is hidden within the clue (trouser can mean to steal or take).
'ONLY' is hidden in the letters of 'don lycra'.

'and' is the link.

Can you help me to learn more?

(Other definitions for only that I've seen before include "Siblingless (child)" , "Except that; single" , "Exclusive - individual" , "Solely, lone" , "Mere" .)

I've seen this clue in The Times and The Sunday Times.

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