Fellow member in area of growth (4)
I believe the answer is:
farm
'area of growth' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'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' acts as a link.
Can you help me to learn more?
(Other definitions for farm that I've seen before include "Grow crops or livestock" , "Land, with buildings, used for agricultural purposes" , "Homestead" , "Country business" , "Land used for cultivation" .)