Night-owl definition
A person who works at night or otherwise stays up late.
noun
A person who habitually stays up and is active late into the night.
noun
(idiomatic) One who stays up late at night or goes to bed late.
He's a night owl. He would rather stay up until 6am than wake up at that time.
noun
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Other Word Forms
Noun
Singular:
night-owl
Plural:
night-owls