Dawn and Victor in a hole (6)
I believe the answer is:
advent
'dawn' is the definition.
(thesaurus)
'victor in a hole' is the wordplay.
'victor' becomes 'v' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' is an insertion indicator.
'hole' becomes 'dent'.
'a'+'dent'='adent'
'v' inserted within 'adent' is 'ADVENT'.
'and' is the link.
(Other definitions for advent that I've seen before include "Season preceding Christmas" , "when the Christmas shopping has to be done?" , "The season leading up to Christmas" , "Coming (of Christmas)" , "observed by Christian church" .)