The most common and most likely answer to this crossword clue is the 5 letter word BOXED
I've seen this crossword clue in The Daily Telegraph
B
O
X
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D
More clues leading to the result BOXED
Buddy explains!

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 BOXED mean?
BOXED verb- To place inside a box; to pack in one or more boxes.
- Usually followed by in: to surround and enclose in a way that restricts movement; to corner, to hem in.
- To mix two containers of paint of similar colour to ensure that the color is identical.
- To make an incision or hole in (a tree) for the purpose of procuring the sap.
- To enclose with boarding, lathing, etc., so as to conceal (for example, pipes) or to bring to a required form.
- To furnish (for example, the axle of a wheel) with a box.
- To enclose (images, text, etc.) in a box.
- To place a value of a primitive type into a corresponding object.
- To strike with the fists; to punch.
- To fight against (a person) in a boxing match.
- To participate in boxing; to be a boxer.
- Packed into a box or boxes.
- In bridge and other card games if the cards in a pack are reversed face-up and face-down then the pack is said to be boxed.