Trail:

Glossary

Tholsel
(Irish): An exchange or market house; the English term is tolsey.
Three-centred arch
An arch with a rounded top, but curving inward more at the sides; also called a depressed arch.
Three-decker pulpit
A raised and enclosed platform for the preaching of sermons, with a reading desk below and clerk’s desk below that. Compare two-decker pulpit.
Through purlins
Purlins (horizontal longitudinal timbers in a roof structure) which pass through or past the principals; they include clasped purlins, which rest on queenposts or are carried in the angle between principals and collar, and trenched purlins which are trenched into the backs of the principals.
Tidal gates
(Canals): Single pair of lock gates allowing vessels to pass when the tide makes a level.
Tie-beam
Main horizontal transverse timber in a roof structure, which carries the feet of the principals at wall level.
Tierceron
In a rib-vault, an extra decorative rib springing from the corner of a bay; hence tierceron vault.
Tifting
(Scots): a mortar bed for verge slates laid over the gable skew.
Tile-hanging
Covering of overlapping tiles on a wall, which is then said to be tile-hung. Slate-hanging is similar.
Tiltyard
An open area used for jousting.