from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A drug in the form of a pill or capsule used to relieve insomnia.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun pharmacology A pill or tablet having a soporific effect.

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

  • noun a soporific drug in the form of a pill (or tablet or capsule)


Sorry, no etymologies found.


Help support Wordnik (and make this page ad-free) by adopting the word sleeping pill.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.