A guy who ditches all his friends to fall in love with the first girl he sees. In most cases you will go months at a time without seeing him, but he will make facebook appearences stating his dying love for this girl. Every 4 minutes.
Ya, Thad saw that girl at the party, she was hefty and he's still being a Diamond.

Did you see Eric's post on facebook, I was hoping it wasnt so but we wont be seeing much of that Diamond anymore.

You think that chick turned Roy into a Diamond?
by Ryan Yeagggggglleeeyy May 04, 2013
An awesome, smart, random, crazy, sexy fun loving girl. She can make you laugh all the time and can pull off any outfit any day. She's the sweetest and nicest person you'll ever meet but don't piss her off or you'll end up in the Nevada Desert
Did you see Diamond's outfit today? She's sophisticated today but yesterday she went scene

How bad did diamond beat that girl up? Let's just say she won't be talking anymore

I love Diamond she gave me her last dollar!
by PoeticWords April 15, 2013
Known as girls' best friend
Girl: Honey can you buy that diamond ring for me?
Mike: No!
Girl: Cheapass povo SOB!
by mysterious_writa September 25, 2004
A reference to LSD, from the 60's
Dealer: Yo wanna buy some diamonds?
by nepi January 10, 2010
Referring to a black diamond trail on a ski mountain.
Snowboarder 1: Hey man, these trails are way to easy.
Snowboarder 2: Yeah, I'm no gaper. Let's go shred on a diamond.
by bheit December 23, 2009
To describe when something is beyond cool, beyond ligit, or just precious.
"DUDEE! That jacket is sooo diamond;"

"Man, that girl Nina's so diamond..."

"Yeah then Mr. Rosenau totally fell down the stairs and smashed his face!"
"Hahahhaha, that's diamond."
by Crackkbaby February 13, 2008
This is for use when something is beyond brilliant!
"We was down the pub an this chav gets his tracksuit pants ripped off on this nail... he's standin there in his all-together with his London Pride innis hands... it was Diamond!"

"What? She said yes? Diamond m8!"
by George Friendly October 12, 2006

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