Joggled

Joggled voussoirs
Term used to describe a method of construction where stones in an arch or composite lintel are interlocked.
Definition ...

Joggled - Keyed together by overlapping joints.
Joist - Wall-to-wall timber beams to support floor boards.
Keep - A strong stone tower; main tower; donjon; stronghold.

19. The joggled arch used in medieval chimneypieces and in Mahommedan archi- tecture.
zo. The discharging or relieving arch, built above the architrave or lintel to take off the weight of the super- structure.

See also: Joggle, Voussoir, Voussoirs, Vault, Architecture