Baldachin
A canopy over an altar, usually supported by columns. (associated with Christian faiths)
Baptismal font
An article of church furniture consisting of a large, sometimes movable, circular basin on a stand, holding the water for baptism. (associated with Christian faiths)
Baptismal tank
A large tank or pool filled with baptismal water, usually sunk in the floor of a church or in a separate baptistery. Also called an immersion font. (associated with Christian faiths)
Baptisterium
(See Baptistery) Also called Baptistery or Baptistry. (associated with Christian faiths)
Baptistery
A building or part of a church containing a font, used for baptismal rites. Also called Bapistry or Baptisterium. (associated with Christian faiths)
Baptistry
(See Baptistery) Also called Baptistery or Baptisterium. (associated with Christian faiths)
Barrel vault
The simplest form of vault – a half-cylinder vault supported by walls or columns, also called a tunnel vault. If the apex of the vault is pointed, it is called a pointed vault. (associated with multiple faiths)
Basilica
A church plan that features a narthex at the entrance, nave and side aisles divided by arcades and terminating with an apse at the sanctuary. (associated with Christian faiths)
Batter
The inward sloping of a wall, doorway or window. (associated with multiple faiths)
Bay
A vertical division of architectural spaces created by the rhythm of architectural elements, doors and/or windows, arches, buttresses or other repeated architectural spatial units that separate the space into corresponding portions. (associated with Christian faiths)
Belfry
A room located in a church tower in which the bells and their supporting timbers are located. (associated with Christian faiths)
Bell-cast roof
A pitched roof that curves outward at its lower edges like a bell. (associated with multiple faiths)
Bellcot or bell cote
A roofed structure on the roof of a church that holds the church bell(s). (associated with Christian faiths)
Belltower
A tall structure – independent or attached to a building – used to hold one or more bells. Also called a campanile. (associated with multiple faiths)
Bellturret
A minor tower, usually capped with a spire or pinnacle, holding one or more bells. (associated with multiple faiths)
Bema (Bimah)
Raised platform in a church or synagogue, sometimes separated from the rest of the place of worship by a railing. Bemas are standard fixtures in synagogues, from which portions of the Torah are read. (associated with Judeo-Christian faiths)
Bench-end
The terminal timber facing of a church pew, frequently decorated with poppy heads and/or blind tracery. (associated with Christian faiths)
Beth ha-medrash
Minor synagogue attached to a major synagogue, usually used for prayer or study. (associated with Judaism)
Blind arcade
A series of continuous arches applied along a wall surface. Also called a blank arcade. (associated with multiple faiths)
Board and batten
A covering for timber-frame buildings – wide vertical boards with thin vertical battens covering the gaps/joints between the larger boards. (associated with multiple faiths)
Box-pew
A pew that is framed in, or encased with, relatively high-walled paneling. Doors are located on the sides to allow access to the pews. Popular during the era when pews were purchased or rented (pre-1850). (associated with Christian faiths)
Broach
A half-pyramidal portion located above the corners of a square tower that enable a transition to an octagonal spire. (associated with multiple faiths)
Broach spire
A spire on a tower or turret that uses triangular facings (broaches) to transition between the square tower and the tapering octagonal spire. (associated with Christian faiths)
Buttress
A supporting architectural feature that projects from or is built against the exterior wall of a building to absorb the outward thrust of interior roof vaulting. In Canada, buttresses are largely ornamental. (associated with Christian faiths)