Representing the ministry, he was no rocker (3)
I believe the answer is:
mod
This could be a double definition.
'representing the ministry he' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'no rocker' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'was' acts as a link.
Can you help me to learn more?
(Other definitions for mod that I've seen before include "ministry" , "Gaelic literary festival" , "Rocker's rival?" , "Meeting of the Scottish" , "1960s teenager" .)