The action of arch, v.1; concrete structure consisting of arches; arched curve.

structure consisting of arches.

(a) n. an arched roof; (b) adj. covered, shaded.

Architecture. A series of arches on the same plane: ‘a series of arches, either open or closed with masonry, supported by columns or piers.’ Parker G…

concrete. Architectural ornament consisting of arcades (see arcade, n. 3).

an arcade (see arcade, n. 3) used as a decoration of a wall.

the stonework composing a wall-arcade.

a series of arches supported by piers.