Top Definition
the bit of exposed helm of someone's boner when it is tucked up into his belt line; cleavage of the penis.
Aaron's gym shirt is way too small. When he reached up to do some pull-ups, his cleavis was totally showing.
by Pu Chung Lao June 10, 2008
A euphemism, or the substitution of a mild, indirect, or vague expression for one thought to be offensive, harsh, or blunt.
"Bull cleavis!"
"Cleavis you!"
"Cleavis hole!"
"Stop cleavising around!"
"You little cleavis off!"
"No cleavising!"
"You're cleavising me!"
by Shindzay Lindle February 26, 2008
Anything you want it to be. A noun, an adjective, even an adverb, let's be honest... It's kind of like the "mug" of yesteryear.
"Giiirl, your cleavis be lookin' good in dem jeans, jeans!"
by Shindzay Lindle February 17, 2008

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