noun
stanchion
STAN-chuhn/ˈstæntʃən/
An upright post used for support or as part of a barrier.
A rope stretches between two stanchions to keep visitors in line.

Etymology
Old French estanchon named a prop or brace, matching the supporting role of the modern post. It was probably connected with a word meaning 'upright,' an apt image for its vertical form.
In context
Some stanchions are tough workhorses with long belts that can block off an area. There is a stanchion to help guide patrons and staff for every situation.
More examples
- Steel stanchions support the platform above the workshop.
- She clips the velvet rope to a brass stanchion.
- Each stanchion is bolted firmly to the floor.
Forms
stanchion · stanchions