He has 50 points (3)
I believe the answer is:
len
'he' is the definition.
Both the answer and definition are singular nouns.
Maybe you can see a link between them that I can't see?
'50 points' is the wordplay.
'50' becomes 'l' (Roman numeral).
'points' becomes 'en' ().
'l'+'en'='LEN''
'has' acts as a link.
Can you help me to learn more?
(Other definitions for len that I've seen before include "Leonard (dim.)" , "- - Hutton, cricketer" , "-- Deighton, author" , "Boy" , "Sir - - Hutton" .)