Information to pass to defender? (8)
I believe the answer is:
feedback
'information' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'pass to defender?' is the wordplay.
'pass' becomes 'feed' (I can't justify this - if you can you should give a lot more credence to this answer).
'to defender?' becomes 'back' (I've seen this before).
'feed'+'back'='FEEDBACK'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for feedback that I've seen before include "cause of hi-fi distortion?" , "Return of product information to supplier" , "some whistling?" , "Suggestions to improve performance" , "Response to an inquiry or experiment" .)