Ornamental garland, shown as if suspended from both ends. Compare swag.
Fibreglass
Synthetic resin reinforced with glass fibre; also called glass-reinforced polyester (GRP). GRC: glass-reinforced concrete.
Field
The central flat area within panelling, often slightly projecting (raised and fielded panelling).
Fillet
A narrow flat band running down a medieval shaft or along a roll moulding. It separates larger curved mouldings in classical cornices, fluting or bases.
Finial
Topmost ornamental feature, e.g. above a spire, gable or cupola.
Flamboyant
The latest phase of French Gothic architecture, with flowing tracery.
Flared header
A brick laid with its short end exposed and burnt to a darker shade, usually producing a patterned effect.
Flash lock
(canals): Removable weir or similar device through which boats pass on a flush of water. Superseded by the pound lock.
Flatted
(Scots): Divided into apartments.
Fleche
(French, lit. arrow): Slender spire on the ridge of a roof. Also called a spirelet.