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- The keystone in the crown of an arch. 拱顶石位于拱顶的塞缝石
- An arch over an entrance or passageway. 拱门，牌楼入口或通道上的拱顶
- A pillar, rectangular in cross section, supporting an arch or roof. 支柱交叉处的长方形柱子，支撑一个拱顶或屋顶
- The trees overhung the brook forming an arch of branches. 那些树伸向小溪上，形成一道树枝的拱门。
- Forming an arch or a curve like that of an arch. 拱形结构的形成拱或类似于拱的曲线
- To cause to form an arch or similar curve. 使成拱形使形成拱或类似曲线
- an arch villain 歹徒魁首
- The upper or exterior curve of an arch. 拱背线拱顶上面或外缘的曲形线
- To furnish(an arch) with a keystone. 用拱顶石装饰（拱顶）
- An arch that is foliated in the Gothic style. 一座按哥特式风格饰以叶形装饰的拱门
- The central stone of an arch or vault. 位于拱或者拱顶的中央的石头。
- One of the curved pieces of an arch. 圆拱弯:拱的弯曲部分。
- To furnish(an arch)with a keystone. 用拱顶石装饰(拱顶)
- Now you have an arch made out of spotlights. 现在你得到了一个由聚光灯构成的弧。
- Provided, made, or covered with an arch. 提供、制作拱状物或用拱状物覆盖的
- The large windows form an arch under the naves. 上砌翠绿色圆肚形尖顶，檐下为半圆形拱窗。
- The condition of having an arched surface. 翘曲表面弯曲的这种状况
- The house is roofed with an arch. 这房子的屋顶呈拱形。
- Yuan Shikai was an arch usurper of state power. 袁世凯是一个窃国大盗。
- Either of the sides of an arch, curving down from the apex to an impost. 梁腋，拱腋拱门上任意一个从拱顶到拱墩间的部分
