The most common and most likely answer to this crossword clue is the 4 letter word AQUA
A
Q
U
A
More clues leading to the result AQUA
- Second for Cambridge as light blue
- Water in a boggy place, mostly
- Finish off a sort of bike in pale blue
- Area as seen in the shade
- Clear blue water
- Water emerging from seaquake
- Pale blue sign. Not half
- Eagle ignoring island lake, water being blue
- Question for motoring organisation about water
- Paraquat has no peripheral role as water
Buddy explains!

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 AQUA mean?
AQUA noun- The compound water.
- A shade of colour, usually a mix of blue and green similar to the colour turquoise.
- Of a greenish-blue colour.