gable

The triangular upper portion of a wall at the end of a pitched roof.

gablet

A decorative motif in the form of a small gable.

galleting

Small pieces of stone or flint in the face of joints.

gargoyle

Projecting masonry feature possibly forming a water spout.

Gothic

Term for a period of architecture based on the pointed arch.

gothic coping

Coping with roll top, weathered and moulded.

granite

Acid, igneous, plutonic rock.

greensand

Sandstone coloured with glauconite.

gritstone

Sandstone with angular, usually coarse grains.

groin

The intersection between two vaults.

grout

Liquid mortar fed into a wall to fill voids.

guttae

Small projections carved below the tenia under each triglyph on Doric architrave.