Harass the debtor gone somehow underground (7)
I believe the answer is:
dungeon
'underground' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'harass the debtor gone somehow' is the wordplay.
'harass the debtor' becomes 'dun' (I can't justify this - if you can you should believe this answer much more).
'somehow' is an anagram indicator.
'gone' is an anagram of 'geon'.
'dun'+'geon'='DUNGEON'
Can you help me to learn more?
(Other definitions for dungeon that I've seen before include "prison the result" , "Keep" , "old prison" , "part of prison" , "Unpleasant cell" .)