Kid undressed outside shower (7)
I believe the answer is:
barrage
'shower' is the definition.
(thesaurus)
'kid undressed outside' is the wordplay.
'kid' becomes 'rag' (I've seen this in other clues).
'undressed' becomes 'bare' (I can't justify this - if you can you should give a lot more credence to this answer).
'outside' is an insertion indicator.
'rag' put within 'bare' is 'BARRAGE'.
Can you help me to learn more?
(Other definitions for barrage that I've seen before include "Cannonade" , "a lot of shells" , "Heavy gunfire" , "Heavy, continuous fire" , "flood protection" .)