Definition of Narcotic:

(Gr. numbness, stupor), A sedative nervine which at first excites and stimulates all the body functions, then causes profound sleep, stupor, coma, insensibility, and death by paralyzing the medulla-centers governing respiration and other vital functions: opium, morphine, cannabis, lactucarium, cimicifuga [Culbreth1927, p 40].

Narcotics are those substances having the property of diminishing the action of the nervous and vascular systems, and of inducing sleep [Brown1878; Meyer1932].

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