Returned blow in style (10)
I believe the answer is:
backstroke
'style' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'returned blow' is the wordplay.
'returned' becomes 'back' (I've seen this before).
'blow' becomes 'stroke' (I've seen this before).
'back'+'stroke'='BACKSTROKE'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for backstroke that I've seen before include "action?" , "Swimming style" , "Way to move through water looking upwards" .)