Eloquence of nouveau riche hosting Conservative briefly (8)
I believe the answer is:
rhetoric
'eloquence' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rhetoric that I've seen before include "High-flown language as for speeches" , "address" , "Eloquence" , "Torchier with language of orator" , "Grandiose (insincere) discourse" .)