Farmer providing his own lunch! (9)
I believe the answer is:
ploughman
This could be a double definition.
'farmer' is the first definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?
'his own lunch' is the second definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'providing' acts as a link.
Can you help me to learn more?
(Other definitions for ploughman that I've seen before include "Adult having a share" , "One with shares in Labour" , "Farm worker" , "Tiller of soil" , "Agricultural worker (having lunch?)" .)