Parapet (noun)
par-a-pet
A low protective wall along the edge of a roof, bridge, or balcony.
A protective wall or earth defence along the top of a trench or other place of concealment for troops.
Late 16th century: from French, or from Italian parapetto ‘chest-high wall’, from para- ‘protecting’ + petto ‘chest’ (from Latin pectus).
Example sentences
“She leaned on the parapet and watched the race go by her balcony.”