The most common and most likely answer to this crossword clue is the 6 letter word ENTOMB
I've seen this crossword clue in Independent
E
N
T
O
M
B
More clues leading to the result ENTOMB
- Bury Hospital Department given eminent award by Bishop
- Place in vault with space to add doctor
- Internet mob broken up
- Opponents for Jones, Bishop of Bury
- 26 Internet mob organisation
- Part of hospital associated with old doctor in Bury
- Doctor following directions to Bury
- Boatmen trashed a shed in Bury
- Inter Milan’s first on bet slips
- Bury two males, the first’s head at the back
Buddy explains!

The straight part
We know that "Place in vault" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case place in vault = entomb.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 ENTOMB mean?
ENTOMB verb- To deposit in a tomb.
- To confine in restrictive surroundings.