balustrade
nounUK /ˌbæl.əˈstreɪd/
US /ˈbæl.ə.streɪd/
A row of small posts with a rail on top that keeps people safe on stairs or balconies.
She held the balustrade as she walked down the stairs.
OTHER MEANINGS
2. A decorative row of posts supporting a rail, often made of stone or wood.
The old mansion had a carved stone balustrade along the terrace.
3. A protective barrier at the edge of a roof, bridge, or balcony.
Visitors leaned on the balustrade to admire the view.
4. The whole structure of posts and rail considered as one unit in architecture.
The architect designed a marble balustrade for the grand entrance.