/ Dictionary / Index S sleepy sickness: Meaning and Definition of Find definitions for: sleep'y sick"ness Pronunciation: [key] — Brit. Pathol. Brit. Pathol. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sleepy Hollow chair sleet Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language