The most common and most likely answer to this crossword clue is the 6 letter word COFFER
C
O
F
F
E
R
More clues leading to the result COFFER
- Collector's top bid for chest
- Reported one hacking jewellery store?
- . In hearing is one who’s hacked storage device
- Chest tender following cold
- Person with ticklish throat picked up something chesty?
- Chest: one with discomfort there, by the sound of it?
- Chest sound of annoying concertgoer
- Hacker said to be safe
- One unpopular at opera in audience box?
- Connoisseur’s top bid for chest
Buddy explains!

The straight part
We know that "box" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case box = coffer.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 COFFER mean?
COFFER noun- A strong chest or box used for keeping money or valuables safe.
- An ornamental sunken panel in a ceiling or dome.
- A cofferdam.
- A supply or store of money, often belonging to an organization.
- A trench dug in the bottom of a dry moat, and extending across it, to enable the besieged to defend it with raking fire.
- To put money or valuables in a coffer
- To decorate something, especially a ceiling, with coffers.