noun

A short pillar or column, typically decorative in design, in a series supporting a rail or coping.

Here, too were the louvres, the broad-based wooden benches, the curvilinear balusters supporting rails around polished wooden platforms.

pole,stake,upright,shaft,prop,support,picket,strut,pillar,pale,paling,column,piling,standard,stanchion,pylon,stave,rod,newel,baluster,jamb,bollard,mast