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ENGLISH · A WORD WITH POSSIBILITIES

milestone.

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.

9 characters3 syllables approx.English language

Meaning & usage

noun/ˈmaɪlˌstoʊn/General-American/ˈmaɪlstəʊn/UK
  1. 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.

  2. An important event in a person's life or career, in the history of a nation, in the life of some project, etc.

    idiomatic
Where this word comes from

From mile + stone. Compare Dutch mijlsteen (“milestone”), German Low German Mielensteen (“milestone”), German Meilenstein (“milestone”), Swedish milsten (“milestone”).

verb/ˈmaɪlˌstoʊn/General-American/ˈmaɪlstəʊn/UK
  1. To place milestones along (a road, etc.).

  2. To plan out a project as a series of major steps.

    idiomatic
Where this word comes from

From mile + stone. Compare Dutch mijlsteen (“milestone”), German Low German Mielensteen (“milestone”), German Meilenstein (“milestone”), Swedish milsten (“milestone”).

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.