Performers get keys to locks (9)
I believe the answer is:
actresses
'performers' is the definition.
(actress is a kind of performer)
'keys to locks' is the wordplay.
'keys to' becomes 'ac' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'locks' becomes 'tresses' (I've seen this before).
'ac'+'tresses'='ACTRESSES'
'get' acts as a link.
Can you help me to learn more?
(Other definitions for actresses that I've seen before include "Female performers" , "Female impersonators" , "Female thespians" , "Stage performers" , "Starlets" .)