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See more synonyms for roughing-in on Thesaurus.com
noun Building Trades.
  1. the act or process of applying a base coat of plaster to a masonry surface.
  2. the act or process of installing plumbing that will later be concealed.
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Origin of roughing-in

First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018