A dry run describes an occasion when you practice doing something to make sure there will be no problems when you really do it.
A rehearsal or practice exercise.
A trial exercise of something to see how it will work before it is launched.
1. There will be a dry run of the wedding rehearsal this Friday, I hope everyone can make it.
2. I’d like to propose a dry run of the product before it hits the shelves.
3. Gary, let’s give our project a dry run before the Science Fair just to make sure everything is in place.
4. Let’s go through a dry run of our presentation before we meet the investment company.
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