Women, not men, ring court (3)
I believe the answer is:
woo
'court' is the definition.
(both can mean to romance someone)
'women not men ring' is the wordplay.
'not' suggests deleting specific letters.
'ring' becomes 'O' (letter resembling a ring).
'women' with 'men' taken out is 'wo'.
'wo'+'o'='WOO'
(Other definitions for woo that I've seen before include "Court (someone)" , "Court, seek to marry" , "Try to get the girl?" , "Court a lady" , "Try to attract" .)