Bog, marsh (3)
This clue is a double definition.
'bog' is the first definition.
(I've seen this in another clue)
'marsh' is the second definition.
(synonyms)
(Other definitions for fen that I've seen before include "Water-logged area of vegetation" , "Low marshy land" , "Slough" , "English marsh" , "One hundredth of a yuan" .)
I believe this clue is a double definition.
'bog' is the first definition.
(I've seen this in another clue)
'marsh' is the second definition.
(I've seen this before)
(Other definitions for swamp that I've seen before include "Seasonally flooded low land" , "Quagmire; inundate" , "In flood" , "Boggy area" , "marshy tract" .)