PED'IMENT, noun [from Latin pes, the foot.] In architecture, an ornament that crowns the ordinances, finishes the fronts of buildings and serves as a decoration over gates, windows and niches. It is of two forms, triangular and circular. A pediment is properly the representation of the roof.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI