Couple from India got together in retirement (4)
I believe the answer is:
item
'couple' is the definition.
(a romantic couple are 'an item')
'india got together in retirement' is the wordplay.
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'got together' becomes 'met' ('meet' can be a synonym of 'get together').
'in retirement' says the letters should be written backwards (retire can mean to go back or backwards).
'met' reversed gives 'tem'.
'i'+'tem'='ITEM'
'from' acts as a link.
(Other definitions for item that I've seen before include "Indivual unit" , "A thing or unit" , "One thing among many" , "story" , "Feature" .)