Special Knoun.
Ketamine hydrochloride, an animal tranquilizer often used to get high or to render another person unconscious.
Example Citation:
"The focus of the raid was a 'designer drug' known as Special K or KHC (ketamine hydrochloride), said Inspector David Bowen. The drug dulls the senses and when combined with alcohol can quickly make someone unconscious."
—Wallace Immen, "Police seize rape drug in Hamilton sting," The Globe and Mail
