Hole in strap met with audible expression of surprise in bridal store (9)

I believe the answer is:

trousseau

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'hole' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I can't explain the remainder of the clue.

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(Other definitions for trousseau that I've seen before include "old packet" , "Stuff for the bottom drawer" , "Clothes etc. collected by a bride for her marriage" , "collection for union" , "USA routes (anag.)" .)

I've seen this clue in The Independent.

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