Making ground connection for listener what’s-it (8)
I believe the answer is:
earthing
'making ground connection' is the definition.
I can't tell whether this definition defines the answer.
'listener what's-it' is the wordplay.
'listener' becomes 'ear' (body part which hears or listens).
'what's it' becomes 'thing'.
'ear'+'thing'='EARTHING'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for earthing that I've seen before include "Going to ground" , "Electrician's work" .)