The most common and most likely answer to this crossword clue is the 6 letter word BARREL
I've seen this crossword clue in The Guardian
B
A
R
R
E
L
More clues leading to the result BARREL
- Tavern ale could be thus: without a receptacle to put it in
- Part of pub used by soldier getting large amount of beer
- Lock on live bomb
- Sort of chest that may be scraped
- Beer container almost dry — add litres!
- Gunsmiths will add it to their stocks
- Place to get drinks by river — the Spanish beer’s found in this?
- Pub encounters ordeal regularly finding keg
- Wander once into party and turn up the volume
- Court rule rewritten to sack upstart's butt
Buddy explains!

The straight part
We know that "bomb" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bomb = barrel.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 BARREL mean?
BARREL noun- A round vessel or cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends or heads. Sometimes applied to a similar cylindrical container made of metal, usually called a drum.
- The quantity which constitutes a full barrel: the volume or weight this represents varies by local law and custom.
- A solid drum, or a hollow cylinder or case
- A metallic tube, as of a gun, from which a projectile is discharged.
- A tube.
- The hollow basal part of a feather.
- The part of a clarinet which connects the mouthpiece and upper joint, and looks rather like a barrel (1).
- A wave that breaks with a hollow compartment.
- A waste receptacle.
- The ribs and belly of a horse or pony.
- A jar.
- Any of the dark-staining regions in the somatosensory cortex of rodents, etc., where somatosensory inputs from the contralateral side of the body come in from the thalamus.
- A statistic derived from launch angle and exit velocity of a ball hit in play.
- To put or to pack in a barrel or barrels.
- To move quickly or in an uncontrolled manner.