The most common and most likely answer to this crossword clue is the 10 letter word MILESTONES
M
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L
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MILESTONES mean?
MILESTONES noun- 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.