night owl
noun Informal.
a person who often stays up late at night; nighthawk.
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Origin of night owl
First recorded in 1585–95
Words nearby night owl
night letter, night lizard, night monkey, night nurse, night office, night owl, night palsy, night person, night raven, night robe, night safe
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for night owl
night owl
night hawk
noun
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
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
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.