Green’s Dictionary of Slang

goric n.

[SE paregoric elixir, a camphorated tincture of opium flavoured with aniseed and benzoic acid; opium and heroin addicts use paregoric when stronger drugs are unavailable]

(drugs) opium.

[US]L. Young et al. Recreational Drugs.
[US]ONDCP Street Terms 10: Goric — Opium.