PARAPET
parapet, breastwork
(noun) fortification consisting of a low wall
parapet
(noun) a low wall along the edge of a roof or balcony
Source: WordNet® 3.1
Etymology
Noun
parapet (plural parapets)
A low protective wall.
Hyponym: balustrade
Coordinate term: railing
Part of a perimeter that extends above the roof.
(military) A fortification consisting of a wall.
Synonym: breastwork
Source: Wiktionary
Par"a*pet, n. Etym: [F., fr. It. parapetto, fr. parare to ward off,
guard (L. parare to prepare, provide) + petto the breast, L. pectus.
See Parry, and Pectoral.]
1. (Arch.)
Definition: A low wall, especially one serving to protect the edge of a
platform, roof, bridge, or the like.
2. (Fort.)
Definition: A wall, rampart, or elevation of earth, for covering soldiers
from an enemy's fire; a breastwork. See Illust. of Casemate.
Source: Webster’s Unabridged Dictionary 1913 Edition