[ ruhf-ing-in ]
/ ˈrʌf ɪŋˈɪn /

noun Building Trades.

the act or process of applying a base coat of plaster to a masonry surface.
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