Protective barrier around the circumference of house roofs. The parapet was required by the Law (Dt 22:8) since flat roofs were widely used (Jos 2:6; Jgs 16:27; 1 Sm 9:25; Is 22:1). Construction of a parapet would relieve the dweller from liability should a person fall from the roof.
Parapet
From Tyndale Bible Dictionary, adapted by Mission Mutual. CC BY-SA 4.0.