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milestone

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noun mile·stone \ˈmī(-ə)l-ˌstōn\

Simple Definition of milestone

  • : a stone by the side of a road that shows the distance in miles to a specified place

  • : an important point in the progress or development of something : a very important event or advance

Source: Merriam-Webster's Learner's Dictionary

Full Definition of milestone

  1. 1 :  a stone serving as a milepost

  2. 2 :  a significant point in development

Examples of milestone in a sentence

  1. <the new drug was regarded as a milestone in the treatment of heart disease>



Illustration of milestone

1662

First Known Use of milestone

1662

Other Transportation Terms

Rhymes with milestone

agon, aitchbone, alone, atone, backbone, Bastogne, bemoan, Big Stone, birthstone, Blackstone, bloodstone, bluestone, bondstone, Boulogne, breastbone, bridge loan, brimstone, brownstone, call loan, calzone, Capone, capstone, cell phone, cheekbone, chinbone, cogon, cologne, Cologne, colon, colón, Colón, condone, copestone, corn pone, curbstone, cyclone, daimon, dapsone, debone, depone, dethrone, dial tone, disown, Dordogne, downzone, dripstone, drop zone, drystone, earphone, earth tone, end zone, enthrone, estrone, fieldstone, firestone, Firestone, flagstone, flowstone, flyblown, footstone, freestone, free zone, full-blown, gallstone, gemstone, Gijón, goldstone, gravestone, greenstone, grindstone, hailstone, halftone, handblown, hard stone, headphone, headstone, hearthstone, high-flown, hip bone, homegrown, hormone, hornstone, impone, ingrown, inkstone, in stone, intone, jawbone, jewel tone, keystone, León, leone, life zone, limestone, lodestone, long bone, Maidstone, millstone, moonstone, mudstone, nose cone, oilstone, orgone, ozone, pay phone, peptone, pinbone, pinecone, piñon, pipestone, postpone, potstone, propone, redbone, red zone, rhinestone, sandstone, shade-grown, shinbone, siltstone, snow cone, soapstone, splint bone, strike zone, T-bone, tailbone, thighbone, time zone, toadstone, tombstone, touchstone, touch-tone, tritone, trombone, turnstone, twelve-tone, two-tone, Tyrone, unknown, unthrone, war zone, well-known, whalebone, wheel-thrown, whetstone, windblown, wishbone, Yangon


MILESTONE Defined for Kids

milestone

play
noun mile·stone \ˈmīl-ˌstōn\

Definition of milestone for Students

  1. 1 :  a stone by the side of a road showing the distance in miles to a given place

  2. 2 :  an important point in progress or development <His discovery was a major milestone in scientific research.>





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