Last messages for couple seen round India (6)
I believe the answer is:
adieux
'last messages' is the definition.
(more than one adieu or goodbye)
'for couple seen round india' is the wordplay.
'for couple' becomes 'a deux' (French phrase meaning for two people).
'seen round' means one lot of letters goes inside another.
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'adeux' enclosing 'i' is 'ADIEUX'.
(Other definitions for adieux that I've seen before include "Farewell remarks" , "French farewells" , "Farewells in France" , "Goodbyes to Pierre" , "Goodbyes in France" .)