bartizan
noun
[ ˌbɑːtɪˈzan ]
• a battlemented parapet or an overhanging corner turret at the top of a castle or church tower.
Origin:
early 19th century: from 17th-century bertisene, Scots variant of bratticing ‘temporary breastwork or parapet’, from brattice; revived and reinterpreted by Sir Walter Scott.