Operator of a printing machine (6)
I believe the answer is:
typist
This might be a double definition.
'operator' is the first definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'a printing machine' is the second definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'of' acts as a link.
Can you help me to learn more?
(Other definitions for typist that I've seen before include "Operator of a machine that prints one character at a time" , "Someone paid to copy using a keyboard" , "Person at keyboard" , "Worker taken from pool, perhaps" , "Keyboard user" .)