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1.
A dark skinned person whose ancestry orignated in Africa and is now living in Canada; a black Canadian.
Nignucks keep calling me trying to get me to buy Canadian boomers.
by FearTheRoo March 07, 2006
 
2.
defining the ashy state of nigger nuckles (or elbows) it represnts a state of chapiness...
"Damn my lips are chapped like a pair of nig nucks!!"
by Barry Mycokinr November 05, 2009