Tragedienne dropping a cent in lock (5)
I believe the answer is:
tress
'lock' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tress that I've seen before include "Long piece of hair" , "Bit of hair" , "Switch" , "Obsolete support" , "Curl - lock" .)