The most common and most likely answer to this crossword clue is the 7 letter word FURNACE
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The straight part
We know that "where body is burned" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where body is burned = furnace.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 FURNACE mean?
FURNACE noun- An industrial heating device, e.g. for smelting metal or baking ceramics.
- A device that provides heat for a building; a space heater.
- Any area that is excessively hot.
- A place or time of punishment, affliction, or great trial; severe experience or discipline.
- To heat in a furnace.
- To exhale like a furnace.