greenboard
n.— «When retiling shower and tub walls, this contractor stands by the outdated practice of using moisture-resistant drywall—commonly called “greenboard”—as a backer board for tile.» —“Not on board with greenboard backer” by Gary Dymski Newsday (Long Island, New York) Oct. 12, 2006. (source: Double-Tongued Dictionary)
Further reading
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After our conversation about towns with extremely short names, many listeners wrote to tell us about Why, Arizona. Others pointed out that there are towns called Ely in Iowa, Minnesota, and Nevada. Other super-short appellations include Rye, New...