Trail:

Glossary

Joists
Horizontal timbers laid in parallel to support the floor of a building.
Keel moulding
Moulding used from the late 12th century, in section like the keel of a ship.
Keep
Principal tower of a castle.
Kentish cusp
In tracery in the Gothic style, a cusp or curved projection which has a v-shaped opening set within the apex. Also called a split cusp.
Key pattern
In classical architecture and decoration, a band of geometrical ornament composed of straight and vertical lines. Also called Greek fret or Greek key.
Keystone
Central stone in an arch or vault.
Killeen
(Irish): A walled enclosure, often near old monastic sites, used until recent times for the burial of unbaptized children.
King-strut
In a roof structure, a vertical timber placed centrally on a tie-beam, not directly supporting longitudinal timbers. Compare queen-strut.
Kingpost
In a roof structure, a vertical timber set centrally on a tie-beam, rising to the apex of the roof to support a ridge-piece.
Knapped
Of flint, worked to a flat outer surface.

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