Uncover battle involving wordplay? (6)

I believe the answer is:

unwrap

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'uncover' is the definition.
(I know that uncover can be written as unwrap)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for unwrap that I've seen before include "peel" , "Remove coverings from (something)" , "Open (a gift)" , "Remove packaging from" , "Reveal" .)

I've seen this clue in The Irish Times.

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