the world > space > relative position > closed or shut condition > that which or one who closes or shuts > a barrier > [noun] > hedge or fence > a fence > balustrade (4)
collective singular. A balustrade, or protective railing. archaic.
A row of balusters, surmounted by a rail or coping, forming an ornamental parapet or barrier along the edge of a terrace, balcony, etc.