The most common and most likely answer to this crossword clue is the 6 letter word CENOTE
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More clues leading to the result CENOTE
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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.
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What does CENOTE mean?
CENOTE noun- A deep natural well or sinkhole, especially in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings.