Fall of assassin that’s central to Ides (7)
I believe the answer is:
cascade
'fall' is the definition.
(cascade can mean to fall or pour)
'assassin that's central to ides' is the wordplay.
'assassin' becomes 'casca' (I've seen this before).
'that's central' says to take the centre.
The middle of 'ides' is 'de'.
'casca'+'de'='CASCADE'
'of' is the link.
(Other definitions for cascade that I've seen before include "Series of small waterfalls" , "Shower" , "Dramatic fall" , "falls in the river" , "Outpouring" .)