The most common and most likely answer to this crossword clue is the 4 letter word BELT
I've seen this crossword clue in The Daily Telegraph
B
E
L
T
More clues leading to the result BELT
Buddy explains!

The straight part
We know that "band" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case band = belt.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 BELT mean?
BELT noun- A band worn around the waist to hold clothing to one's body (usually pants), hold weapons (such as a gun or sword), or serve as a decorative piece of clothing.
- A band used as a restraint for safety purposes, such as a seat belt.
- A band that is used in a machine to help transfer motion or power.
- Anything that resembles a belt, or that encircles or crosses like a belt; a strip or stripe.
- A trophy in the shape of a belt, generally awarded for martial arts.
- A collection of rocky-constituted bodies (such as asteroids) which orbit a star.
- One of certain girdles or zones on the surface of the planets Jupiter and Saturn, supposed to be of the nature of clouds.
- A powerful blow, often made with a fist or heavy object.
- A quick drink of liquor.
- (usually capitalized) A geographical region known for a particular product, feature or demographic (Corn Belt, Bible Belt, Black Belt, Green Belt).
- The part of the strike zone at the height of the batter's waist.
- Device that holds and feeds cartridges into a belt-fed weapon
- To encircle.
- To fasten a belt on.
- To invest (a person) with a belt as part of a formal ceremony such as knighthood.
- To hit with a belt.
- To scream or sing in a loud manner.
- To drink quickly, often in gulps.
- To hit someone or something.
- To hit a pitched ball a long distance, usually for a home run.
- To move very fast