Number working to get source of ectoplasm - content of empty room? (2-3)
I believe the answer is:
no-one
'content of empty room?' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'number working to get source of ectoplasm' is the wordplay.
'number' becomes 'no' (abbreviation).
'working' becomes 'on' (on can mean working or activated).
'to get' says to put letters next to each other.
'source of' suggests taking the first letters (the start - or source - of the word).
The first letter of 'ectoplasm' is 'e'.
'no'+'on'+'e'='NO-ONE'
Can you help me to learn more?
(Other definitions for no-one that I've seen before include "Not one person" , "Not a soul" , "Nobody" , "Not a single person" .)