The most common and most likely answer to this crossword clue is the 9 letter word INSURANCE
I've seen this crossword clue in Financial Times
I
N
S
U
R
A
N
C
E
More clues leading to the result INSURANCE
- In case, run out and find cover
- Nurse, can I somehow get 12?
- Nun and cashier breaking cover
- Current suggestion to take occasional income from shillings and rand as cover
- Cruise nan organised? She may need this to travel
- Protection in flying saucer orbiting moon ultimately
- Coverage of Sun in race for circulation
- Cruise with Ann abroad creating this charge?
- A nice urn’s smashed — this might help to replace it
- Cover home? Sure can, if worried
Buddy explains!

The straight part
We know that "cover" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cover = insurance.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 INSURANCE mean?
INSURANCE noun- A means of indemnity against a future occurrence of an uncertain event.
- The business of providing insurance.
- Any attempt to forestall an unfavorable event.
- A bet made after the deal, which pays off if the dealer has blackjack.
- An insurance policy