Victor trapped in a depression finds Dawn (6)
I believe the answer is:
advent
'dawn' is the definition.
(thesaurus)
'victor trapped in a depression' is the wordplay.
'victor' becomes 'V' (phonetic alphabet: alpha, bravo, charlie etc.).
'trapped in' means one lot of letters goes inside another.
'depression' becomes 'dent' (dent is a kind of depression).
'a'+'dent'='adent'
'v' put inside 'adent' is 'ADVENT'.
'finds' is the link.
(Other definitions for advent that I've seen before include "Second Coming" , "Christmas shopping time in" , "when the Church year begins" , "Time approaching Christmas" , "Period in the Christian calendar" .)