miliarium
/ˌmɪljəriˈʊm/ or /ˌmaɪlɪˈɑrɪəm/Definitions
1. noun
A milestone or marker in the Roman Empire, typically bearing the emperor’s name and the distance from Rome.
“The archaeologists discovered several miliaria along the ancient Roman road.”
2. noun
A milestone or marker, especially one marking a boundary or limit.
“The new development was marked by a large miliarium at its entrance.”