Dignitary gets great syrup (6)
I believe the answer is:
bigwig
'dignitary' is the definition.
(I've seen this before)
'great syrup' is the wordplay.
'great' becomes 'big' ('big' can be a synonym of 'great').
'syrup' becomes 'wig' ('syrup of fig' is Cockney rhyming slang for 'wig').
'big'+'wig'='BIGWIG'
'gets' is the link.
(Other definitions for bigwig that I've seen before include "important figure" , "Important person (slang)" , "Mogul" , "Dignitary (sl.)" , "Important person, with large, bald head?" .)