Leave the French out of the welcome (3)
I believe the answer is:
ave
'the welcome' is the definition.
('welcome' or 'farewell' - from Latin)
'leave the french out' is the wordplay.
'the french' becomes 'le' ('the' in French).
'out' is a deletion indicator.
'leave' with 'le' removed is 'AVE'.
'of' is the link.
(Other definitions for ave that I've seen before include "Hello to the old Romans" , "Hail as to Caesar" , "Hail in graveyard." , "Welcome" , "Hail as to Maria" .)