n 1  :  a drug (as opium) that in moderate doses dulls the senses, relieves pain, and induces profound sleep but in excessive doses causes stupor, coma, or convulsions  2  :  a drug (as marijuana or LSD) subject to restriction similar to that of addictive narcotics whether in fact physiologically addictive and narcotic or not
adj 1  :  having the properties of or yielding a narcotic  2  :  of, induced by, or concerned with narcotics  3  :  of, involving, or intended for narcotic addicts .
 
 
 
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