Pronunciation: (slē'ping), [key]
the condition of being asleep.
2. of, pertaining to, or having accommodations for sleeping: a sleeping compartment.
3. used to sleep in or on: a sleeping jacket.
4. used to induce or aid sleep or while asleep: sleeping mask.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.