Key worker in the hairdressing salon? (9)
I believe the answer is:
locksmith
'key worker' is the definition.
'locksmith' can be an answer for 'worker' (locksmith is a kind of worker). I am unsure of the 'key' bit.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for locksmith that I've seen before include "laughing stock" , "Maker of security devices" , "Yale scholar" , "key figure" , "Security expert" .)