Definition: [adjective] relating to, resembling, or containing opium.
Example: the use of opiate drugs
Definition: [noun] a drug derived from or related to opium.
Example: the opiates are known to have natural counterparts called endorphins
Definition: [verb] dull the senses of (someone) with or as if with opium.
Example: he grew old and soft, opiating himself into a dreaming bliss