- balustradeA row of balusters topped by a rail, serving as an open parapet, as along the edge of a balcony, terrace, bridge, staircase, or the eaves of a building.
- balusterA short column used in a group to support a rail, as commonly found on the side of a stairway or around a balcony.
- balistrariaarrowslit (a narrow opening through which arrows can be fired).