Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun milestone

2 senses of milestone

Sense 1
milestone, milepost -- (stone post at side of a road to show distances)
       => marker, marking, mark -- (a distinguishing symbol; "the owner's mark was on all the sheep")

Sense 2
milestone -- (a significant event in your life (or in a project))
       => juncture, occasion -- (an event that occurs at a critical time; "at such junctures he always had an impulse to leave"; "it was needed only on special occasions")