roofing square
n.— «“I’m at the point where I need to stay in shape to maintain a certain output, workwise,” said Mr. Entrekin, 51. “When I was in my prime, I could nail 14 squares a day. Now I’m happy with 6.” (One roofing square is equal to 100 square feet.)» —“‘Industrial Athletes’: Men With the Goods” by Bradley Melekian New York Times Oct. 26, 2006. (source: Double-Tongued Dictionary)