Tuck pointing
Exposed mortar jointing of masonry or brickwork with a narrow central channel filled with finer, whiter mortar.
Strictly, the architecture of the English Tudor dynasty (1485-1603), but used more often for late Gothic secular buildings especially of the first half of the 16th century. These use a simplified version of Perpendicular, characterised by straight-headed mullioned windows with arched lights, and by rooflines with steep gables and tall chimneys, often asymmetrically placed.
Tudor arch
An arch with arcs in each corner joining straight lines to the central point.
Tumbling or tumbling-in
Courses of brickwork laid at right-angles to a slope, e.g. of a gable, forming triangles by tapering into horizontal courses.
Tunnel vault
The simplest kind of vault, in the form of a continuous semicircular or pointed arch; also called a barrel vault.
One of the orders of classical architecture, a simpler variant of Roman Doric.
Tusking stones
(Scots): Projecting end stones for bonding with an adjoining wall.
Two-centred arch
The simplest kind of pointed arch.
Two-decker pulpit
A raised and enclosed platform for the preaching of sermons, with a reading desk below. Compare three-decker pulpit.
The surface between a lintel and the arch above it, or within a pediment.