Crossword Genius

Southern Irish lake and marsh (6)

Ross

I believe the answer is:

slough

'marsh' is the definition.
(thesaurus)

'southern irish lake' is the wordplay.
'southern' becomes 's' (abbreviation).
'irish lake' becomes 'lough' (I've seen this before).
's'+'lough'='SLOUGH'

'and' acts as a link.

(Other definitions for slough that I've seen before include "Swamp; Berkshire town" , "Berkshire town and local authority" , "Swamp; shed (dead skin)" , "A bog or marsh, perhaps of despond" , "Swamp or marshy place, maybe of despond" .)

I've seen this clue in The Telegraph.
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