bal ‧ us ‧ trade /ˌbæləˈstreɪd $ ˈbæləstreɪd/ BrE AmE noun [countable]
[ Date: 1600-1700 ; Language: French ; Origin: Italian balaustrata , from balaustro 'post supporting a handrail' , from balaustra 'pomegranate flower' ; because of the shape of the post ]
a row of wooden, stone, or metal posts that stop someone falling from a bridge or ↑ balcony