The most common and most likely answer to this crossword clue is the 7 letter word BLADDER
I've seen this crossword clue in The Times
B
L
A
D
D
E
R
More clues leading to the result BLADDER
- Bag run after start of bowling
- What some dancing fools hold — bishop must take steps to realise it
- One taking the piss out of British hierarchy?
- A wee container?
- Deflated by peer, Blair abandons broadcast – “Snake!”
- Note scale of wee organ
- Note alternative to flight — last stop before going?
- Run after bishop, providing bag
- Black snake’s left inside bag
- Bishop left calculator in bag
Buddy explains!

The straight part
We know that "Bag" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bag = bladder.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 BLADDER mean?
BLADDER noun- A flexible sac that can expand and contract and that holds liquids or gases.
- Specifically, the urinary bladder.
- A hollow, inflatable organ of a plant.
- The inflatable bag inside various balls used in sports, such as footballs and rugby balls.
- A sealed plastic bag that contains wine and is usually packaged in a cask.
- Anything inflated, empty, or unsound.
- To swell out like a bladder with air; to inflate.
- To store or put up in bladders.