Definition of bondstone in English:
A stone or brick running through a wall to bind or strengthen it.
- Those blocks with a slight flow due to chipping or cracking are cut to obtain bondstones, curbs or paving stones.
- The Arms of the Provinces and Sees of England are carved on bondstones which bind the flint facing to the wall-core behind.
- This perpenstone, or bondstone, is the same as the Parping Ashlar of Glocestershire - a stone which passes through a wall and shows a fair face on either side.