Kryptonite

(redirected from Green kryptonite)
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Drug slang A regional term for crack cocaine
Vox populi A fictional element from the Superman saga which is one of the few things that weakens the Man of Steel. Prolonged exposure to Kryptonite is capable of killing Superman.
References in periodicals archive ?
In that movie, Superman's arch enemy Lex Luthor steals some green kryptonite, with which to weaken and destroy him, from a display case at the Metropolis Museum.
Sadly, unlike green kryptonite, the Serbian discovery - unearthed by geologists from the mining company Rio Tinto - is white, powdery, and emits no radiation (the property which robs Superman of his powers).
No doubt his words gave premature coronaries to the accountants who run the football business, and view sentiment and sportsmanship the way Superman views green Kryptonite. With fear and horror.