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A synonym for a person who is mentally handicapped, a.k.a retarded.
You're such a fucking nurnur.
by Marcus December 02, 2003
An idiot

This nurnur spelled *NSYNC wrong on this internet website.
by stevie958474748 April 21, 2009
A nurnur is someone who acts like an idiot.Or is very,very nerdy.
:I saw this guy at the mall.He was rocking out to Nstinc,wearing punk-rock threads.
:Yeah.Such a nurnur.
by RiotGirl24 March 28, 2005