A curvilinear, often lobelike figure or space formed between the cusps of intersecting arcs, found especially in Gothic tracery and Moorish ornament.

• 叶形饰在尖顶的交叉拱门之间的一块曲线的、常为裂片状的空间，在哥特式的窗花格交织线条和马蹄型拱的装饰上尤为多见