The most common and most likely answer to this crossword clue is the 3 letter word ICY
I've seen this crossword clue in The Guardian
I
C
Y
More clues leading to the result ICY
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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 ICY mean?
ICY adjective- Pertaining to, resembling, or abounding in ice; cold; frosty.
- Covered with ice, wholly or partially.
- Characterized by coldness of manner; frigid; cold.
- To be wearing an excessive amount of jewelry, especially of the high-quality and expensive kind.