a carved pyramidal ornament; used in 13th century England
dogtooth详细解释
dog.tooth n.(名词)A canine tooth; an eyetooth.犬齿;尖牙Architecture A medieval ornament consisting of four leaflike projections radiating from a raised center.【建筑学】 犬牙饰,四叶饰:四片叶状突出物由一凸起中心向四周辐射的中世纪建筑装饰