剑桥高阶英汉双解词典 - pediment collapse

pediment
/'ped.ɪ.mənt/ specialized
noun [C]
* a triangular part at the top of the front of a building which supports the roof and which is often decorated
（建筑门廊顶上的）三角形楣饰；山形墙；三角墙

柯林斯COBUILD高阶英汉双解学习词典 - pediment collapse

pediment
1.N-COUNT 可数名词（门窗上的）三角楣饰，山花饰 A pediment is a large triangular structure built over a door or window as a decoration.

    牛津高阶英汉双解 第7版 - pediment collapse

    pediment
    pedi·ment / 5pedimEnt / noun   (architecture 建) the part in the shape of a triangle above the entrance of a building in the ancient Greek style
       (古典希腊式建筑入口处上方的)三角形楣饰

    词源记忆 - pediment collapse

    pediment 门窗上的三角楣饰，山花饰
    石匠行话，可能来自pyramid 拼写变体，拼写受-ment 影响俗化。