Possibly had a nice estate in South America (8)
I believe the answer is:
hacienda
'estate in south america' is the definition.
'hacienda' can be an answer for 'estate' (hacienda is a kind of estate). I'm not certain of the 'in south america' bit.
'possibly had a nice' is the wordplay.
'possibly' indicates an anagram.
'had'+'a'+'nice'='hadanice'
'hadanice' anagrammed gives 'HACIENDA'.
Can you help me to learn more?
(Other definitions for hacienda that I've seen before include "Ranch in Latin America" , "House on a Spanish ranch" , "farmstead" , "estate abroad" , "large estate in South America!" .)