/ Dictionary / Index S sleeping pill: Meaning and Definition of Find definitions for: sleep'ing pill" Pronunciation: [key] a pill or capsule containing a drug for inducing sleep. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sleeping partner sleeping porch Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language