Two rivers overflow and ravage (8)

I believe the answer is:

deflower

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'ravage' is the definition.
(thesaurus)

'two rivers' is the wordplay.
'two rivers' means two substitutions for 'river'.
'river' becomes 'de' (I can't explain this - if you can you should give a lot more credence to this answer).
'river' becomes 'flower' (a river flows).
'de'+'flower'='DEFLOWER'

'overflow and' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.

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I've seen this clue in The Hindu.

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