Area of boggy ground (6)
I believe the answer is:
morass
'area of boggy ground' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for morass that I've seen before include "Mire, quagmire" , "Bog - situation hard to get out of" , "complicated situation" , "dangerous situation" , "Muddled situation" .)