Etymology
Advertisement

milestone (n.)

also mile-stone, "stone or pillar set up on a highway or other line of travel to mark the distance in miles," 1746, from mile + stone (n.).

Others are reading

Advertisement
Advertisement
Definitions of milestone

milestone (n.)
stone post at side of a road to show distances;
Synonyms: milepost
milestone (n.)
a significant event in your life (or in a project);
From wordnet.princeton.edu