Winner has one in front of a queen (8)
I believe the answer is:
victoria
'queen' is the definition.
(Victoria is an example)
'winner has one in front of a' is the wordplay.
'winner' becomes 'victor' ('victor' can be a synonym of 'winner'**).
'has' says to put letters next to each other.
'one' becomes 'i' (Roman numeral).
'in front of' means one lot of letters go next to another.
'victor'+'i'+'a'='VICTORIA'
(Other definitions for victoria that I've seen before include "Queenly" , "It's the end of the line" , "Queen; London station" , "Queen and Falls" , "Coach may only go so far" .)