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arch brick[′ärch ‚brik]
A wedge-shaped brick used in arches.
An overburned brick, resulting from contact with the fire in the arch of a kiln.
arch brick, compass brick, featheredge brick, radial brick, radiating brick, radius brick, voussoir brick
1. A wedge-shaped brick used in arch or circular construction; its two larger faces are inclined toward each other.
2. Extremely hard-burnt brick from an arch.