narcotic

¹nar·cot·ic

noun \när-ˈkät-ik\

Definition of NARCOTIC

1

: a drug (as codeine, methadone, or morphine) 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