Fellow member in region of growth (4)
I believe the answer is:
farm
'region of growth' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'fellow member' is the wordplay.
'fellow' becomes 'f' (abbreviation - of a society etc.).
'member' becomes 'arm' (arm is a kind of member**).
'f'+'arm'='FARM'
'in' is the link.
Can you help me to learn more?
(Other definitions for farm that I've seen before include "Use the land" , "Land, with buildings, used for agricultural purposes" , "Agricultural building" , "Agricultural unit" , "Rural workplace" .)