Definition of opiate

• n. - Originally, a medicine of a thicker consistence than sirup, prepared with opium.
• n. - Any medicine that contains opium, and has the quality of inducing sleep or repose; a narcotic.
• n. - Anything which induces rest or inaction; that which quiets uneasiness.
• a. - Inducing sleep; somniferous; narcotic; hence, anodyne; causing rest, dullness, or inaction; as, the opiate rod of Hermes.
• v. t. - To subject to the influence of an opiate; to put to sleep.