'Milestone' definitions:
Definition of 'milestone'
From: WordNet
noun
Stone post at side of a road to show distances [syn: milestone, milepost]
noun
A significant event in your life (or in a project)
Definition of 'Milestone'
From: GCIDE
- Milestone \Mile"stone`\, n.
- 1. A stone serving the same purpose as a milepost. [1913 Webster]
- 2. An event or accomplishment marking a significant advance in an endeavor; a notable achievment; as, putting a man in orbit was a major milestone on the way to the moon.
- Syn: milepost. [PJC]
Synonyms of 'milestone'
From: Moby Thesaurus
- bench mark,
- bookmark,
- cairn,
- cardinal point,
- catstone,
- chief thing,
- climax,
- core,
- cornerstone,
- crisis,
- critical point,
- crux,
- essence,
- essential,
- essential matter,
- fundamental,
- gist,
- gravamen,
- great point,
- heart,
- high point,
- important thing,
- issue,
- kernel,
- keystone,
- landmark,
- lighthouse,
- lightship,
- main point,
- main thing,
- mark,
- marker,
- material point,
- meat,
- menhir,
- milepost,
- monument,
- nub,
- occasion,
- pharos,
- pith,
- pivot,
- platform,
- real issue,
- salient point,
- seamark,
- sine qua non,
- substance,
- substantive point,
- the bottom line,
- the point,
- tower,
- turning point,
- watchtower