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

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Top Definition
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 10, 2009

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Someone who stays up late and sleeps in the day.
"Tash and Ben will be awake, they're both nightowl's.
by Diego July 07, 2003

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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

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The Urban Dictionary T-Shirt

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