The most common and most likely answer to this crossword clue is the 8 letter word CANISTER
I've seen this crossword clue in The Guardian
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More clues leading to the result CANISTER
- As horse move quickly round one’s box
- Caddy is breaking into loping stride on course
- Container originally carrying wine from the east
- … case of cold wine brought up
- Receptacle is blocking run
- Brought back some ferrets in a cardboard box
- Preserve headless nun in storage box
- Case of foreign wine sent up to college head
- Vessel is entering race
- Flask of cold wine knocked over
Buddy explains!

The straight part
We know that "storage box" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case storage box = canister.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 CANISTER mean?
CANISTER noun- A cylindrical or rectangular container usually of lightweight metal, plastic, or laminated pasteboard used for holding a dry product (as tea, crackers, flour, matches).
- Any of various cylindrical metal receptacles usually with a removable close-fitting top.
- A special short range antipersonnel projectile consisting of a casing of light metal, loaded with preformed submissiles such as flechettes or steel balls. The casing is designed to open just beyond the muzzle of the weapon, dispersing the submissiles.
- A component of canister type protective mask containing a mechanical filter and chemical filling to filter, neutralize and/or absorb toxic chemical, biological and radiological agents.
- A projectile component containing colored or screening smoke or riot control agent composition.
- To pack into a canister.