ped·i·ment 
(pĕdə-mənt)
(pĕdə-mənt)n.
1.
a. A wide, low-pitched gable surmounting the façade of a building in the Grecian style.
b. A triangular element, similar to or derivative of a Grecian pediment, used widely in architecture and decoration.
2. Geology A broad, gently sloping rock surface at the base of a steeper slope, often covered with alluvium, formed primarily by erosion.
[Alteration (influenced by Latin pēs, ped-, foot) of earlier perement, probably alteration of PYRAMID.]
ped′i·mental (-mĕntl) adj.
pedi·ment′ed adj.
pedimentUS Supreme Court building
Washington, DC