Top definition
something described as slick and clean at the same time.
"yo man, that ride is sleen" "that's a sleen haircut"
by kocheese May 29, 2006
Get the SLEEN neck gaiter and mug.
Jul 6 Word of the Day
A polite term for shoving a lubricated probe into the Earth's hole to release gas.
Earth: I'm having trouble passing gas.

People: That's nothing a fracking won't fix.
by onehandcrabbing February 21, 2012
Get the Fracking neck gaiter and mug.
2
A word with many meanings, can be used as an insult due to it's origin's being a type of Lizard, or alternatively as a way of describing a party/ drinking session.
As an insult/ banter
"What are you, a sailor"
"Filthy slut"
"You're a fucking sleen"

As an adjective
"So, Larry's party tonight in town, all in for a long one?"
"Yeah man, we're gonna get Sleened!"
by HarkinsEgo December 18, 2011
Get a Sleen mug for your cat Helena.
3
Common abbreviation of the lovely name 'Celine'. It certainly does not mean any of those other nasty things. :P
by Celine aka Sleen July 03, 2006
Get the Sleen neck gaiter and mug.
4
v.t. to engage in anal intercourse (contraction of the trade name of petroleum jelly - Vaseline - tm) also sleener
After much pleading, James agreed to allow Patrick to sleen him.
by Harold B. Slusser April 28, 2006
Get a sleen mug for your bunkmate Yasemin.
5
An incredibly awesome audience
You all are so sleen
by V Dean June 19, 2019
Get the Sleen neck gaiter and mug.