The most common and most likely answer to this crossword clue is the 11 letter word SHRINK-WRAP
I've seen this crossword clue in The Times
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More clues leading to the result SHRINK-WRAP
Buddy explains!
The straight part
We know that "closely-arranged cover" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case closely-arranged cover = shrink-wrap.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 SHRINK-WRAP mean?
SHRINK-WRAP noun- A plastic film that is used to protect an item and which during application contracts so it tightly enclose it.
- The wrapping around an item that has been shrink-wrapped.
- To apply shrink-wrap to (an item).