terracy--prophetes.ai

terracy, a.
  (ˈtɛrəsɪ)
  [f. terrace n. 6 + -y.]
  Of marble: Containing terraces or soft spots.

1727–41 Chambers Cycl. s.v. Marble, Terracy Marble, that with soft places in it, which must be filled up with cement, as that of Languedoc.

Oxford English Dictionary