A drug (as of the opium) that in moderate doses allays sensibility, relieves pain, and produces profound sleep but that in poisonous doses produces stupor, coma, or convulsions.

麻醉剂。

Person who makes habitual use of narcotics.

习惯使用麻醉剂者。

Producing stupor or sleep.

昏睡的；人事不省的。