Terrible Ravana is from East city (8)
I believe the answer is:
'city' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'terrible ravana is from east' is the wordplay.
'terrible' indicates anagramming the letters.
'from east' shows that the letters should be reversed in order.
'is' reversed gives 'si'.
'ravana' with letters rearranged gives 'varana'.
Can you help me to learn more?