The most common and most likely answer to this crossword clue is the 6 letter word CLOSED
I've seen this crossword clue in The Times
C
L
O
S
E
D
More clues leading to the result CLOSED
- Record hosts fail to keep to
- Fail to penetrate record that's restricted
- Humid days came to an end
- Like some television critic could see, endlessly rattled
- Record stores miss out — being this?
- Exclusive class does badly for fool
- To fail to understand is comprehended by diplomats
- Ceased trading near Germany
- Oddly callous journalist: “Shut up!”
- Blocked miserly duke
Buddy explains!

The straight part
We know that "came to an end" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case came to an end = closed.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 CLOSED mean?
CLOSED verb- (physical) To remove a gap.
- (social) To finish, to terminate.
- To come or gather around; to enclose; to encompass; to confine.
- To have a vector sum of 0; that is, to form a closed polygon.
- Sealed, made inaccessible or impassable; not open.
- (of a store or business) Not operating or conducting trade.
- Not public.
- (of a set) Having an open complement.
- (of a set) Such that its image under the specified operation is contained in it.
- (of a formula) Lacking a free variable.
- (of a walk) Whose first and last vertices are the same, forming a closed loop.
- Formed by closing the mouth and nose passages completely, like the consonants /t/, /d/ and /p/.
- Having the sound cut off sharply by a following consonant, like the /ɪ/ in pin.