Longman Dictionary of Contemporary English homepage

milestone

 noun
     
Related topics: Roads
mile‧stone [countable]
1 a very important event in the development of something [= milepost American English]
milestone in
an important milestone in South African history
The treatment of diabetes reached a significant milestone in the 1970s.
2TTR a stone next to a road that shows the distance in miles to the next town
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

Browse the dictionary