The pinnacle of being great. Perfect, legendary, epic.

Used to describe a person, place, thing, or anything amazing.
Man, that store is HD.

That lotion smells HD.

That song was HD.
by TheRealStig December 21, 2010
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Heavy-duty. Used to describe a heffer.
Have you seen Ernesto's girlfriend? She's pretty HD.
by idiot_bag December 4, 2007
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Hyper-deformed. The character (usually in anime ) looks normal but has some strange physical qualities.
You call that a drawing? It's totally HD!
by BlackTwilight October 7, 2003
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HD is the person that said "If you dont shutup i will put a grenade up your vagina"
"Would you rather be an anus or a pubic hair?"
by Hennnnnnnnn January 27, 2009
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Stands for Hard or Hyper Dick; the act of having an erect penis or an exaggeration of someone's determination.
I don't think that girls bra is hiding anything much, HD
by Lancey Boy August 3, 2010
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Short for Hilary Duff on HilaryFan.com
by HDR February 4, 2004
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