The most common and most likely answer to this crossword clue is the 7 letter word ICEPACK
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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 ICEPACK mean?
ICEPACK noun- A large floating mass of ice; pack ice.
- A pack of crushed ice applied to the body in order to reduce pain or inflammation.
- A plastic sac of silicone that can be cooled in a freezer and then used in a cool bag, cool box or cooler; a freezer block