A pot again broken in part of South America (9)
I believe the answer is:
patagonia
'part of south america' is the definition.
('Patagonia' is part of 'south america')
'a pot again broken' is the wordplay.
'broken' is an anagram indicator.
'a'+'pot'+'again'='apotagain'
'apotagain' anagrammed gives 'PATAGONIA'.
'in' is the link.
(Other definitions for patagonia that I've seen before include "Southernmost region of S America" , "Region of southern Argentina and Chile" , "Region of South America" , "South American region" , "far-off land" .)