horsed

horsed

slang Currently using, intoxicated by, or addicted to heroin. "Horse" is a slang term for heroin. This is your first time getting horsed? Just be sure to take it slowly, OK? You can tell Tara's horsed again—she's been really sick looking and out of it lately.
See also: horse
Farlex Dictionary of Idioms.

horsed

and on the horse
mod. under the effects of heroin; addicted to heroin. (Drugs.) How long have you been on the horse? Look at those tracks on his arms. He’s horsed all right.
See also: horse
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • on the needle
  • on the junk
  • hazel
  • on the mojo
  • moonrock
  • girked
  • kick cold
  • kick cold (turkey)
  • tragic
  • tragic-magic