parapet
noun
[ ˈparəpɪt ]
• a low protective wall along the edge of a roof, bridge, or balcony.
• "she stood on the bridge, leaning over the parapet to watch the water race by"
Origin:
late 16th century: from French, or from Italian parapetto ‘chest-high wall’, from para- ‘protecting’ + petto ‘chest’ (from Latin pectus ).
