Husband in holiday area — a winner (5)

I believe the answer is:

champ

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'a winner' is the definition.
(I've seen this before)

'husband in holiday area' is the wordplay.
'husband' becomes 'h'.
'in' is an insertion indicator.
'holiday area' becomes 'camp' (I can't justify this - if you can you should give a lot more credence to this answer).
'h' placed inside 'camp' is 'CHAMP'.

Can you help me to learn more?

(Other definitions for champ that I've seen before include "Show impatience" , "Top sportsman" , "The first person" , "use teeth?" , "Crush" .)

I've seen this clue in The Times.

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