Webster's Revised Unabridged Dictionary · 1913

Pediment

Pediment , noun

[Latin pes, pedis, a foot. See Foot.]

(Architecture) 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.