The most common and most likely answer to this crossword clue is the 8 letter word MILLPOND
M
I
L
L
P
O
N
D
More clues leading to the result MILLPOND
- Record playing in calm, calm water
- Some calm water philosopher thought about deeply? Not half!
- Record about to be set in calm body of water
- Object about manipulation of poll: this is traditionally flat
- Opinion divided by lines, humourless epitome of smoothness
- Calm water can make philosopher think without hesitation
Buddy explains!

The straight part
We know that "this is traditionally flat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case this is traditionally flat = millpond.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 MILLPOND mean?
MILLPOND noun- A pond or reservoir produced by damming a river or stream in order to provide a steady source of water for a millrace.