a message informing of danger. 1  making known, 2  heads-up, 3  wake-up call, 4  false alarm, 5  alerting, 6  alert, 7  informing, 8  threat, 9  caution, 10  caveat, 11  alarmism, 12  premonition, 13  strategic warning, 14  forewarning, 15  tactical warning.
meperidine is an opioid pain medication an opioid is sometimes called a narcotic meperidine is used to treat moderate to severe pain meperidine may also be used for purposes not listed in this medication guide
drug-a substance that is used as a medicine or narcotic. hard drug-a narcotic that is considered relatively strong and likely to cause addiction. Demerol, meperidine, meperidine hydrochloride-a synthetic narcotic drug (trade name Demerol) used to treat pain.. A drug, such as morphine or heroin, that is derived from opium or an opiumlike compound, relieves pain, often induces sleep, can alter consciousness, and is potentially addictive. b. A controlled substance.