The most common and most likely answer to this crossword clue is the 7 letter word MATURES
I've seen this crossword clue in The Daily Telegraph
M
A
T
U
R
E
S
More clues leading to the result MATURES
Buddy explains!

The straight part
We know that "ages" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ages = matures.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 MATURES mean?
MATURES verb- To proceed toward maturity: full development or completion (either of concrete or of abstract things, e.g. plans, judgments, qualities).
- (of food, especially fruit) To attain maturity, to become mature or ripe.
- To bring (something) to maturity, full development or completion.
- To make (something, e.g. fruit) ripe or mature.
- (of a person) To proceed toward or become mature or full-grown, either physically or psychologically; to gain experience or wisdom with age.
- To make (someone) mature.
- To reach the date when payment is due.