Ignore troubled area (6)
I believe the answer is:
region
'area' is the definition.
(I know that area can be written as region)
'ignore troubled' is the wordplay.
'troubled' indicates anagramming the letters.
'ignore' is an anagram of 'REGION'.
(Other definitions for region that I've seen before include "Area, location" , "Tract or area" , "Wide area" , "Ignore (anag) - area" , "Area, neighbourhood" .)