The most common and most likely answer to this crossword clue is the 6 letter word DEPEND
I've seen this crossword clue in The Daily Telegraph
D
E
P
E
N
D
More clues leading to the result DEPEND
- Small deposit to finish in bank
- Rest of French power to be shut down?
- Rely on half of pool dropping a point
- Rest in diving area when energy’s spent
- Count of French prison beginning to despair
- Count departs terminus
- Deputy to close bank
- Bank where one can safely dive without first ending in slime
- Bank sank further after sacking every other European
- Bank said to be good place for diving
Buddy explains!

The straight part
We know that "bank" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bank = depend.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 DEPEND mean?
DEPEND verb- (followed by on or upon, formerly also by of) To be contingent or conditioned; to have something as a necessary condition; to hinge on.
- (followed by on or upon) To trust; to have confidence; to rely.
- To hang down; to be sustained by being fastened or attached to something above.
- To be pending; to be undetermined or undecided.