† siliquastreObs.rare. [ad.mod.L. siliquastrum (which in class.L. means pepperwort), f. L. siliqua pod.] (See quots.) 1708in Phil.Trans. XXVI. 79 Punctularia, the Punctulary, Sope stone, or Porous Marble Siliquastre.Ibid., Siliquastrum, the Shale, or Siliquastre: An Ichthyodont, resembling leguminous Husks.