adjective
The best possible example of something.
A
Platonic ideal.
To be of discernibly higher quality than all other related things.
origin
The film
Citizen Kane, said to be the preeminent form of
filmic endeavors, and it's subsequent invocation in describing the quality of other things.
"Dude, that play in this sports match we are watching was kane!"
"Did you see that crazy
kaner punch that
bear in the face?! That bear didn't stand a chance!"
"
Half-Life is the kanest game ever made."