Talk given in French, a triumph (4)
I believe the answer is:
chat
'talk' is the definition.
(chat can mean to talk)
'in french a triumph' is the wordplay.
'in' indicates a hidden word.
'CHAT' is hidden in the letters of 'french a triumph'.
'given' acts as a link.
(Other definitions for chat that I've seen before include "One given to song" , "flier" , "Gossip" , "A bird; converse" , "Talk amiably - bird" .)