from The Century Dictionary and Cyclopedia
- n. An arch resting upon piers.
Sorry, no etymologies found.
In Wykeham's work, on the contrary, we find above the lofty pier-arch what at first sight appears to be a clerestory window divided at mid-height by a transom, and recessed under a deeply-pointed archway.
Each pier-arch is formed of two orders or courses of voussoirs, the edges of which are left square, wholly undecorated by mouldings.
Each transept has an eastern and a western aisle, while at the extreme ends there are aisles rising to pier-arch level, consisting of two arches, which a triple bearing-shaft supports in the centre.
Also in the clerestory two windows are placed over each pier-arch, instead of the single window of the choir.