The most common and most likely answer to this crossword clue is the 4 letter word TANK
I've seen this crossword clue in The Times
T
A
N
K
More clues leading to the result TANK
- Bomb was humming — second to be dropped
- Brown tail of shark in aquarium
- Cistern is to fail expensively?
- Churchill maybe smelt bad, heading off
- Possible alternative to barrel bomb
- Churchill for one smelt bad with no lead on
- Thunder had a hum, initially ignored
- See 25dn.
- Cistern with lid off was minging
- Golden koi primarily kept here?
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 = tank.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 TANK mean?
TANK noun- A closed container for liquids or gases.
- An open container or pool for storing water or other liquids.
- A pond, pool, or small lake, natural or artificial.
- The fuel reservoir of a vehicle.
- The amount held by a container; a tankful.
- An armoured fighting vehicle, armed with a gun, and moving on caterpillar tracks.
- (Australian and Indian English) A reservoir or dam.
- A large metal container for holding drinking water for animals, usually placed near a wind-driven water pump, in an animal pen or field.
- By extension a small pond for the same purpose.
- A very muscular and physically imposing person. Somebody who is built like a tank.
- A unit or character designed primarily around damage absorption and holding the attention of the enemy (as opposed to dealing damage, healing, or other tasks).
- A prison cell, or prison generally.
- A metaphorical place where a player goes to contemplate a decision; see in the tank.
- To fail or fall (often used in describing the economy or the stock market); to degenerate or decline rapidly; to plummet.
- To attract the attacks of an enemy target in cooperative team-based combat, so that one's teammates can defeat the enemy in question more efficiently.
- To put (fuel, etc.) into a tank.
- To deliberately lose a sports match with the intent of gaining a perceived future competitive advantage.
- To resist damage; to be attacked without being hurt.
- To contemplate a decision for a long time; to go in the tank.
- A small Indian dry measure, averaging 240 grains in weight.
- A Bombay weight of 72 grains, for pearls.
- To stand; to tolerate.