ped·i·ment /ˈpɛdəmənt/
山形牆,三角牆
Ped·i·ment n. Arch. Originally, in classical architecture, the triangular space forming the gable of a simple roof; hence, a similar form used as a decoration over porticoes, doors, windows, etc.; also, a rounded or broken frontal having a similar position and use. See Temple.
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pediment
n : a triangular gable between a horizontal entablature and a
sloping roof