Definition of "dogtooth"

dogtooth

noun
plural dogtooths or dogteeth
1. (plural only "dogtooth") A canine tooth.
2. (architecture) An ornament common in Gothic architecture, consisting of pointed projections resembling teeth.
  Quotations
  This arch is the side of a niche from the tomb of Can Signorio della Scala, at Verona; and the value, as well as the distant expression of its dogtooth, may be seen by referring to Prout's beautiful drawing of this tomb in his "Sketches in France and Italy."
  1851, John Ruskin, “The Edge and Fillet”, in The Stones of Venice, volume I (The Foundations), London: Smith, Elder, and Co., […], § IV, page 260
3. Synonym of houndstooth