dry run








noun

  1. a rehearsal or practice exercise.
  2. Military. practice in firing arms without using live ammunition.

noun

  1. military practice in weapon firing, a drill, or a manoeuvre without using live ammunition
  2. informal a trial or practice, esp in simulated conditions; rehearsal

A trial exercise or rehearsal, as in Regard this as a dry run for tonight’s ceremony. This term, using dry in the sense of “unproductive,” was at first employed mainly in the military for simulated bombings in which no bombs were dropped. [c. 1940]

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