Show of wealth (4)
I believe the answer is:
ritz
'show of wealth' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ritz that I've seen before include "Ostentatious luxury" , "Upmarket hotel" , "Swiss hotelier, who founded an international chain, d. 1918" , "Swiss hotelier, creator of a chain of elegant hotels, d. 1918" , "Swiss founder of hotel chain" .)