The most common and most likely answer to this crossword clue is the 4 letter word RIEL
R
I
E
L
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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 RIEL mean?
RIEL noun- The monetary unit of Cambodia, equivalent to 100 sen or 10 kak. Symbol: ៛