Foliation.—The decoration of an opening, or of tracery by means of foils and cusps.
Fosse.—The ditch of a fortress.
François I. Style.—The early Renaissance architecture of France during part of the sixteenth century.
Frieze.—(1) The middle member of a Classic or Renaissance entablature; this was often sculptured and carved; (2) any band of sculptured ornament.
Gable.—The triangular-shaped wall carrying the end of a roof.
Gablet.—A small gable (usually ornamental only).
Gallery.—(1) An apartment of great length in proportion to its width; (2) a raised floor or stage in a building.
Gargoyle.—A projecting waterspout, usually carved in stone, more rarely formed of metal.
Geometrical.—The architecture of the earlier part of the decorated period in England.
Grille.—A grating or ornamental railing of metal.