Jerry to stream Irish reflective medley (9)
I believe the answer is:
potpourri
'medley' is the definition.
(synonyms)
'jerry to stream irish reflective' is the wordplay.
'jerry' becomes 'pot' (slang for chamber pot).
'to stream' becomes 'pour' (synonyms).
'irish' becomes 'IR' (abbreviation for Irish).
'reflective' shows that the letters should be reversed in order.
'ir' written backwards gives 'ri'.
'pot'+'pour'+'ri'='POTPOURRI'
(Other definitions for potpourri that I've seen before include "fragrant blend" , "Hotchpotch" , "Dried petal mix" , "Scented petals and spices" , "Mixed bag - rip up root (anag)" .)