Definitions

1. noun

a substance, especially a narcotic or analgesic, that induces a feeling of drowsiness or sleepiness; a substance that can induce a state of euphoria

“The opiate was prescribed to help her sleep after surgery.”

2. adjective

of, relating to, or characterized by narcotics or analgesics

“The opiate properties of the plant made it a popular ingredient in traditional medicine.”

3. verb

to administer an opiate to (someone) in order to induce sleep or relieve pain

“The doctor opiated the patient before performing surgery.”