The most common and most likely answer to this crossword clue is the 4 letter word SIDE
I've seen this crossword clue in Independent
S
I
D
E
More clues leading to the result SIDE
- District I had found in home counties
- Team in United, I see, going up
- It’s potentially the right attitude
- Bank charge discount partially returned
- Face team
- Idling pet sits awkwardly, producing great mirth
- Team is back on Derbyshire’s boundaries
- Face party
- Audibly expressed frustration with BBC4, perhaps
- Vicious for one English bank
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 = side.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 SIDE mean?
SIDE noun- A bounding straight edge of a two-dimensional shape.
- A flat surface of a three-dimensional object; a face.
- One half (left or right, top or bottom, front or back, etc.) of something or someone.
- A region in a specified position with respect to something.
- The portion of the human torso usually covered by the arms when they are not raised; the areas on the left and right between the belly or chest and the back.
- One surface of a sheet of paper (used instead of "page", which can mean one or both surfaces.)
- One possible aspect of a concept, person or thing.
- One set of competitors in a game.
- A sports team.
- A group having a particular allegiance in a conflict or competition.
- A recorded piece of music; a record, especially in jazz.
- Sidespin; english
- A television channel, usually as opposed to the one currently being watched (from when there were only two channels).
- A dish that accompanies the main course; a side dish.
- A line of descent traced through one parent as distinguished from that traced through another.
- The batters faced in an inning by a particular pitcher
- An unjustified air of self-importance.
- A written monologue or part of a scene to be read by an actor at an audition.
- A man who prefers not to engage in anal sex during homosexual intercourse.
- To ally oneself, be in an alliance, usually with "with" or rarely "in with"
- To lean on one side.
- To be or stand at the side of; to be on the side toward.
- To suit; to pair; to match.
- To work (a timber or rib) to a certain thickness by trimming the sides.
- To furnish with a siding.
- To provide with, as a side or accompaniment.
- Being on the left or right, or toward the left or right; lateral.
- Indirect; oblique; incidental.
- To clear, tidy or sort.
- Wide; large; long, pendulous, hanging low, trailing; far-reaching.
- Far; distant.
- Widely; wide; far.