dry run

Idioms & Phrases

dry run

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]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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