Bartizannoun
A small, overhanging structure for lookout or defense, usually projecting at an angle of a building or near an entrance gateway.
Bartizan
A bartizan (an alteration of bratticing), also called a guerite, garita, or échauguette, or spelled bartisan, is an overhanging, wall-mounted turret projecting from the walls of late medieval and early-modern fortifications from the early 14th century up to the 18th century. Most frequently found at corners, they protected a warder and enabled him to see his surroundings.
Bartisannoun
(architecture) A parapet with battlements projecting from the top of a tower in a castle or church.