(US drugs) to inhale a narcotic.
|Real Bohemia xx: To take nasally is to ‘horn,’ ‘sniff,’ or ‘snort’.|
|Requiem for a Dream (1987) 32: So Tiny horns a little just to be cool [...] and he gets wasted jim. [Ibid.] 115: Im not gonta waste no good dope by hornin it man.|
|Homeboy 49: Horned the last [i.e. portion of heroin] just an hour ago.|
|ONDCP Street Terms 12: Horn — To inhale cocaine; [...] to inhale a drug.|