A low wall or railing along the edge of a roof or balcony.

छत या बालकनी के किनारे एक छोटी दीवार या रेलिंग।

English Usage: The soldiers took cover behind the parapet during the battle.

Hindi Usage: सैनिकों ने युद्ध के दौरान parapet के पीछे छिपकर बैठ गए।