You know him (3)
I believe the answer is:
ken
This might be a double definition.
'you' is the first definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?
'know him' is the second definition.
'ken' can be an answer for 'know' (Scottish term meaning to know). I am not certain of the 'him' bit.
Can you help me to learn more?
(Other definitions for ken that I've seen before include "Identify; -- Livingstone" , "Notice" , "Know; man's name" , "Awareness" , "One's range of knowledge" .)