Knowledge nothing in numbers game (4)
I believe the answer is:
keno
'numbers game' is the definition.
'keno' can be an answer for 'numbers' (thesaurus). I'm not sure about the 'game' bit.
'knowledge nothing' is the wordplay.
'knowledge' becomes 'ken' (ken is a kind of knowledge).
'nothing' becomes 'o' (looks like zero - 0).
'ken'+'o'='KENO'
'in' is the link.
Can you help me to learn more?
(Other definitions for keno that I've seen before include "gambler's choice" , "gambling game" , "2 8 [CASINO GAME]" , "game of chance" , "A bingo-like game" .)