Extraordinary Estonian's hit (9)
I believe the answer is:
sensation
'hit' is the definition.
(I've seen this in another clue)
'extraordinary estonian's' is the wordplay.
'extraordinary' indicates anagramming the letters.
'estonians' with letters rearranged gives 'SENSATION'.
(Other definitions for sensation that I've seen before include "Crowd puller" , "Feeling, awareness of stimulation" , "Physical feeling or perception" , "Scandal" , "Scandalous news item" .)