Pierce in dress rehearsal (3-7)

I believe the answer is:

run-through

I believe this clue is a double definition.

'pierce' is the first definition.
(thesaurus)

'dress rehearsal' is the second definition.
(thesaurus)

'in' is the link.

(Another definition for run-through that I've seen is " Practice".)

I've seen this clue in The Independent.

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