roughing-in [ruhf-ing-in] Word Origin 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.

Origin of roughing-in First recorded in 1815–25 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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