See slumber in Webster's New World Roget's A-Z Thesaurus II
verb
To be asleep:
sleep. Idioms: be in the land of Nod, catch some shuteye, sleep like a log (or rock) (or top), sleep tight. See awareness
noun
The natural recurring condition of suspended consciousness by which the body rests:
sleep. (Slang) shuteye. Idioms: land of Nod, the arms of Morpheus. See awareness
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