Italian flower given to politician in ceremony (4)
I believe the answer is:
pomp
'ceremony' is the definition.
(I've seen this before)
'italian flower given to politician' is the wordplay.
'italian flower' becomes 'Po' (Italian river - something which flows).
'given to' says to put letters next to each other.
'politician' becomes 'MP' (Member of Parliament).
'po'+'mp'='POMP'
'in' acts as a link.
(Other definitions for pomp that I've seen before include "Grandiosity" , "Great ceremony" , "Ostentatious ceremony" , "Stately and splendid display" , "Stately display, goes with ceremony" .)