Request silence on party cash (4)
I believe the answer is:
dosh
'cash' is the definition.
(dosh can informally mean money)
'request silence on party' is the wordplay.
'request' becomes 'o'.
'silence' becomes 'sh' ('sh' is said to tell someone to be silent).
'on' means one lot of letters go next to another.
'party' becomes 'd' (I can't explain this - if you can you should give a lot more credence to this answer).
'o'+'sh'='osh'
'osh' put after 'd' is 'DOSH'.
Can you help me to learn more?
(Other definitions for dosh that I've seen before include "currency" , "Moolah (slang)" , "Shod (anag.)" , "Spondulicks" , "Contents of purse" .)