Branch Tracery: See Tracery.
Broken Entablature: one that projects over each column or pilaster instead of maintaining a single straight plane.
Broken Pediment: where the triangular or curved form is broken into in the centre; an ornamental device adopted in the Renaissance.
Buttress: a mass of masonry, projecting from the face of the wall to resist the thrust of an arch or vault. When the mass is separated from the wall and connected with it by an arch, the arch and mass form a Flying Buttress.
Byzantine: the style evolved in Byzantium (Constantinople) in the fifth century, A.D.
[C]airn: an artificial heap of stones, sometimes piled about a corpse-chamber, which served as a prehistoric sepulchre and monument.
Campanile (cam-pah-neé-la): Italian term for bell-tower.
Canopy: specifically, the carved ornamentation that surmounts a niche, altar or tomb.
Capella Major: the space in a Spanish cathedral, enclosed with screens or Rejas (which see) and containing the High Altar.
Capital: the upper member of a column, pier, pillar or pilaster.