Guard stone
A guard stone, jostle stone or chasse-roue (French, lit. 'wheel chaser'), is a projecting metal, concrete, or stone exterior architectural element located at the corner and/or foot of gates, portes-cochères, garage entries, and walls to prevent damage from vehicle tires and wheels. == Description == Guard stones were developed as an item of street furniture during the era of horse-drawn vehicles, but some are still in use today.