from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various sedative narcotics containing opium or one or more of its natural or synthetic derivatives.
  • n. A drug, hormone, or other chemical substance having sedative or narcotic effects similar to those containing opium or its derivatives: a natural brain opiate. Also called opioid.
  • n. Something that dulls the senses and induces relaxation or torpor.
  • adj. Containing opium or any of its derivatives.
  • adj. Resembling opium or its derivatives in activity.
  • adj. Inducing sleep or sedation; soporific.
  • adj. Causing dullness or apathy; deadening.
  • transitive v. To subject to the action of an opiate.
  • transitive v. To dull or deaden as if with a narcotic drug.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Relating to, resembling, or containing opium.
  • adj. Soporific; inducing sleep or sedation.
  • adj. Deadening; causing apathy or dullness.
  • n. A drug, hormone or other substance derived from or related to opium.
  • n. Something that dulls the senses and induces a false and unrealistic sense of contentment.
  • v. To treat with an opiate drug.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Inducing sleep; somniferous; narcotic; hence, anodyne; causing rest, dullness, or inaction.
  • n. Originally, a medicine of a thicker consistency 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.
  • transitive v. To subject to the influence of an opiate; to put to sleep.

from The Century Dictionary and Cyclopedia

  • Furnished with opium; mixed or prepared with opium; hence, inducing sleep; soporiferous; somniferous; narcotic; causing rest or inaction.
  • n. Any medicine that contains opium and has the quality of inducing sleep or repose; a narcotic; hence, anything which induces rest or inaction, or relieves uneasiness or irritation, mental or bodily; anything that dulls sensation, mental or physical.
  • To lull to sleep; ply with opiates.
  • To dull the effect of upon the mind, as by an opiate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a narcotic drug that contains opium or an opium derivative


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English, from Medieval Latin opiātum, from Latin opium, opium; see opium.


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