markerstone

noun
UK /ˈmɑːkəstəʊn/
US /ˈmɑːrkərstoʊn/

A markerstone is a special stone that shows where something is or where a place begins.

The hikers followed the trail until they reached a markerstone at the edge of the forest.


OTHER MEANINGS

2. A stone placed to remember a person or event.

A small markerstone stood beside the road to remember the old battle.

3. A stone that marks an important point in history or progress.

The invention of the printing press was a markerstone in human history.

4. A stone used to show the distance along a road or path.

Every mile, a markerstone told travelers how far they had come.