Words at Play : In the Details: Architecture Terms Worth Looking At
Definition:
a triangular area on the face of a building below the roof, above an entrance, etc.
About the Word:
There's no connection between the impediment that means "hindrance" and the pediment that is a feature of classic architecture. This pediment is believed to trace back to the word pyramid.
The pediment shown here appears on the Supreme Court Building in Washington, D.C.