In England it means "nothing" or none, as in "Hey, do you have some spare change?" answer "I am sorry, I have nowt to give you."
Other English speakers may use "naught" (nothing, zero) in the same context.
Yes, "nowt" is slang for "nothing".
Nowt.
nowt
DOUBT
Nowt
Nowt.
nowt egg
He is gay, nowt wrong with that!
by doing nowt you silly sausage!
This phrase means to listen to everything, observe everything, but keep quiet and not say anything. It is often used to suggest that it is better to stay silent and avoid getting involved in discussions or conflicts.
nowt egg
nowt coz he ent got any