stonepillar
nounUK /ˈstəʊnˌpɪlə/
US /ˈstoʊnˌpɪlər/
A tall post made of stone that holds something up or marks a place.
The old stonepillar stood at the gate for hundreds of years.
OTHER MEANINGS
2. A strong person or thing that supports a group or idea.
She was the stonepillar of the family during hard times.
3. A stone marker showing a boundary or distance.
We walked until we reached the stonepillar by the road.
4. A vertical rock formation in a cave or landscape.
Water dripped from the stonepillar inside the cave.