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1.
A New Zealand-ism referring to one's cousins, or extended family. Can be used to include extended family, friends etc.
Lets go grab the cousies first and then head up to Big T Takeaways for a mean feed.
by Graham 'Cous' Taylor July 04, 2006
 
2.
The greatest basketball player who ever lived.
"LeBron James is the best NBA player ever!"
"You're crazy, it's obviously Cousy!"
by BobCousy June 20, 2013