arch
An inverted U shape.
Other meanings
An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.
An architectural element having the shape of an arch
Word history
From Latin "arcus" (a bow, arc, arch).
Where this comes from
This definition is adapted from “arch” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.