Particular case of embezzlement in House of Parliament (6)
I believe the answer is:
detail
'particular' is the definition.
(synonyms)
'case of embezzlement in house of parliament' is the wordplay.
'case of' means to remove the middle letters (like emptying a case).
'in' is an insertion indicator.
'house of parliament' becomes 'dail' (I can't justify this - if you can you should believe this answer much more).
'embezzlement' with its centre removed is 'et'.
'et' going into 'dail' is 'DETAIL'.
Can you help me to learn more?
(Other definitions for detail that I've seen before include "party" , "Lead it (anag)" , "Unimportant area" , "Tailed into particulars" , "analysts may go into" .)