a person who often stays up late at night; nighthawk.
Origin of night owl
First recorded in 1585–95
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for night owlrake
British Dictionary definitions for night owl
informal a person who is or prefers to be up and about late at night
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Idioms and Phrases with night owl
A person who habitually stays up late and is active at night, as in You can call her after midnight, for she's a night owl. This colloquial term, originally used in the late 1500s for an owl that is active at night, was transferred to nocturnal human beings in the mid-1800s.
The American Heritage® Idioms Dictionary
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