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3.
An amount of human equal to a 1x1x1 inch cube.
"I just stole a cleesh from someone!"

"Damn! Lookit that cleesh!"
by CRuh March 28, 2005
 
1.
(1) Abbr. Cliche

(2) A generic filler word that can be used in a multitude of situations, ranging from vulgar to commonplace.

(3) The skin located in the crook of the knee.
Person #1: I just got chrome spinning rims installed on my Odyssey.
Person #2: Oh, man! That's so cleesh!

Person #1: Her skirt was so short that her cleesh was hanging out!
Person #2: Oh my god! She's such a slut!

Person #1: I have a huge test tomorrow that I didn't study for.
Person #2: Cleesh, man. Cleesh.
by Cleeshlife May 08, 2011
 
2.
What you would call something very cool but not an ordinary circumstance.
That spontaneously combusting swan was sooo cleesh!
by spiderjoe November 30, 2010