A parapet.
A fortification consisting of a breast-high bulwark; a parapet.
Breast augmentation.
A railing on the quarter-deck and forecastle.
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.