A 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.
A rail which can be held, such as on the side of a staircase, ramp or other walkway, and serving as a support or guard.
A moving continuous belt-like rail on either side of an escalator which users can hold on to for support.