someone who tends to stay up late into the night
Most kids these days are night owls. They sleep at wee hours of the morning and get up late in the day.
by regal_aeros May 11, 2009
A meth user that stays on the pourch all night at a the meth house, watching everything, usually a paranoid tweaker.
look at all those gackulas on the pourch, damm night owl
by S. 22nd street October 18, 2006
People who are assumed to be lazy and/or procrastinators. However, they are the masterminds of Earth.

My Supporting Reasons:
~ Peace and quiet to focus (everyone else is asleep).
~ For all my fellow antisocial homies, no human interactions for hours! WOO HOO!
~ No distractions (i.e. media notifications, sunshine, good weather, people, sounds, etc)
~ More time to enjoy the daytime. Doing hobbies, talking to people, and just acting like a normal human beings in general!
~ Not having someone constantly peeking over your shoulder (that is, if you live with people).

In conclusion, Night owls are frickin' geniuses and deserve more credit than they are given. FYI, I'm writing this definition @3:54 A.M.
Person A: You look tired.
Person B: I am.
Person A: What time did you sleep last night?

Person B: I didn't.
Person A: Damn... you're officially a night owl.
Person B: THANK YOU! WHAT AN HONOUR! :D
by A_Credible_Source December 21, 2021
Turning a late night to an early morning in the company of friends where time becomes relative.
Boy: lets go night owling!
Girl: Yeah lets! The beach?

Boy: A bon fire?
Girl: Ill get the wood!
by Midnight Madness June 11, 2009
someone who stays up at night; someone who works at night.
My roommate is a night owl and usually reads until 5:00 A.M. A few night owls stayed at the café all night long.
by pipisprettycool April 3, 2015
A person in your vacation group who spends the nights out and about. They party hard at night and sleep during the day.
Craig is oir night owl. He never wakes before happy hour and spends his nights clubbing or bar hopping.
by Theamazinggeek April 27, 2019
A girl you sleep with that you don't want your friends to know about. Typically some easy girl you meet at a bar or party that is willing to sleep with you A.S.A.P.
"When is the last time you've gotten laid?"
"Last weekend with some night owl I met at the bar."
by Joker5997 November 10, 2014