milepost

/ˈmaɪlpoʊst/
noun
  1. A sign or marker by the side of a road that shows the distance in miles to or from a place.
    • The old milepost was made of stone and had been there for centuries.
    • The milepost indicated we were 50 miles from the city.
    • They stopped at a milepost to take a photo of the scenery.
  2. An important event or point in development; a milestone (figurative).
    • Each year marks a new milepost in the company's growth.
    • Graduating from college was a major milepost in her life.
    • The invention of the internet was a milepost in human communication.
Synonyms
What does "milepost" mean? | whatsthatwordmean | whatsthatwordmean