Just one point ahead, was the victor (3)
I believe the answer is:
won
'just one' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'point ahead was the victor' is the wordplay.
'point' becomes 'n' (N is an example).
'ahead' is a charade indicator (letters next to each other).
'was the victor' becomes 'wo' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'n' put after 'wo' is 'WON'.
Can you help me to learn more?
(Other definitions for won that I've seen before include "Korean currency, was victorious" , "Gained a victory" , "little cash in Korea" , "and 26: Chinese dumpling" , "Came first" .)