MILESTONE
milestone, milepost
(noun) stone post at side of a road to show distances
milestone
(noun) a significant event in your life (or in a project)
Source: WordNet® 3.1
Etymology
Noun
milestone (plural milestones)
A stone milepost (or by extension in other materials), one of a series of numbered markers placed along a road at regular intervals, typically at the side of the road or in a median.
An important event in a person's life or career, in the history of a nation, in the life of some project, etc.
Synonyms
• landmark
Verb
milestone (third-person singular simple present milestones, present participle milestoning, simple past and past participle milestoned)
To place milestones along (a road, etc.).
To plan out a project as a series of major steps.
Anagrams
• lemoniest, lime-stone, limestone
Source: Wiktionary
Mile"stone`, n.
Definition: A stone serving the same purpose as a milepost.
Source: Webster’s Unabridged Dictionary 1913 Edition