Land round hard, hard area (6)
I believe the answer is:
ghetto
'area' is the definition.
(I have seen 'Segregated area ' mean 'ghetto' so perhaps 'area' could also mean 'ghetto')
'land round hard hard' is the wordplay.
'land' becomes 'get' (both can mean to secure or obtain).
'round' means one lot of letters goes inside another.
'hard' becomes 'h' (abbreviation used in pencil classifications).
'hard' becomes 'to' (I can't justify this - if you can you should give a lot more credence to this answer).
'get' going around 'h' is 'ghet'.
'ghet'+'to'='GHETTO'
Can you help me to learn more?
(Other definitions for ghetto that I've seen before include "Racially distinct quarter" , "Area for those deprived" , "Run-down area" , "Slum area occupied by particular group" , "Historical Jewish quarter" .)