Trite conversation where brokers work (5,8)
I believe the answer is:
stock exchange
'where brokers work' is the definition.
'trite conversation' is the wordplay.
'trite' becomes 'stock'.
'conversation' becomes 'exchange' (exchange is a kind of conversation).
'stock'+'exchange'='STOCK EXCHANGE'
(Other definitions for stock exchange that I've seen before include "Nasdaq, for example" , "City trading establishment" , "Regulated market for securites" , "Securities market" .)