concretable
n.— «In the run for the money are 30 Palm Beach County Schools, including six from Boca Raton and Delray, which are in need of permanent additions to better accommodate the rising number of students. Calusa Elementary, Del Prado Elementary, Verde Elementary, and Waters Edge Elementary are all slated for additional modulars—classroom facilities that can be stacked on top of each other if need be—to replace the more expensive concretables, which cannot be stacked.» —“Classroom size reduction funds pending distribution” Boca Raton News (Florida) Dec. 9, 2003. (source: Double-Tongued Dictionary)
Further reading
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While reading Great Expectations (Bookshop|Amazon) by Charles Dickens, a listener in Arlington, Texas, is surprised when one of the characters inherits some money, which Dickens describes as a cool four thousand. Were they really using cool that way...