Women’s group about to get telegram (4)
I believe the answer is:
wire
'telegram' is the definition.
(I know that telegram can be written as wire)
'women's group about' is the wordplay.
'women's group' becomes 'wi' (Women's Institute).
'about' becomes 're' ('re' means regarding or about).
'wi'+'re'='WIRE'
'to get' acts as a link.
(Other definitions for wire that I've seen before include "Flex" , "Drawn-out metal" , "Strand of metal" , "Thin strip of metal, may be barbed" , "Telegram about the fencing material" .)