opioid definition for kids
Full Definition of OPIATE. 1. a: a drug (as morphine or codeine) containing or derived from opium and tending to induce sleep and alleviate pain; broadly: narcotic 1a b: opioid 1.2. : something that induces rest or inaction or quiets uneasiness. See opiate defined for English-language learners. opiate. noun opiÂ·ate \ËÅ-pÄ-Ét, -ËÄt\. Tweet. : a drug (such as morphine or codeine) that is made from opium and that is used to reduce pain or cause sleep. : something that causes people to ignore problems and to relax instead of doing things that need to be done.