Medicine. A drug which when swallowed, inhaled, or injected into the system induces drowsiness, stupor, or insensibility, according to its strength…

Opium; an opiate.

Medicine and Pharmacology. Originally: any medicinal preparation containing opium, used chiefly to induce sleep or relieve pain. Later: spec. any…

A sleep-producing medicine, a narcotic.

A medicinal preparation made from the root of the mandrake, used as a hypnotic or sedative; (figurative) something that produces a soothing or…

A soporific medicine; a narcotic.

Medicine. An opiate; spec. a sherry-based tincture of opium and morphine. Now rare or historical.

An opiate. Obsolete. rare.

an opiate.

spec. An intoxicating or psychoactive drug; a narcotic. Cf. sense A. 7.

A synthetic opiate which is a powerful analgesic, used particularly in anaesthesia.