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1: A person who is very uncaring as to the feelings of others and is also very self absorbabed as is the case with Kanye West

2: A thickening of or a hard thickened area on skin or bark

3: A mass of exudate and connective tissue that forms around a break in a bone and is converted into bone in healing

4: The soft tissue that forms over a wounded or cut plant surface
Kanye West is a very callus person and does not care about the feelings of any one.

Taylor Swift accepts the Moonman Award for Best Female Video for "You Belong With Me" Until Kanye West callously cuts in and steals her big moment!
by MissKittyX3 September 22, 2009
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