Top Definition
Dark or to do with Night time
"the icecream man came to my street at 2 am.. nocturnal bastard!"
by Anomynous April 05, 2005
Sleeps during the day, awake at night.
Why is Nash eating fruity pebbles at 3am? Gosh he is so nocturnal
by Ayee55 December 30, 2014
The natural state of college students.
"My roommate is asleep at 3 PM. I haven't seen her awake in a week."
"Oh; no worries. Mine is too. She's nocturnal."

"Dude, your paper is due in 12 hours."
"I'll get it done. I'm an owl, nocturnal."
by Nocturnal_Owl December 29, 2011
Someone who is up at night and normally sleeps through the day.

2) one who is more active at night than through the day.
My nocturnal friend is always up at 3am and ends up not coming into school be ause he went back to sleep
by YOU'RE A SPOON May 08, 2016
A word to describe wierd poeple that you see at night and night time only.
The not nocturnals are out.
by Robert Kahn May 19, 2005
the best skateshop in the city of philadelphia. owned by kerry getz and mark brandstetter.
by xxcuntbagsk8r57xx August 16, 2009
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