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3. GRIN
an acronym for the set of technologies: genetic, robotic, information & nanotech.

the convergence of theses technologies into a single technology.
investing in GRIN stocks is a sure thing right now.

our children will need access to grintech if they are to compete in a global economy.

GRIN technologies are the modern day 4-horseman of the Apocalypse.
1. grin
A smile with an attitude.
I grinned and shot him in the head.
by grin Mar 5, 2004 add a video
2. Grin
Slang for marijuana (usually laced). A word used primarily in the West Coast in the 1990's.
See also water or wet.
"I threw away all my grin... and I feel strange..." --Sage

"What's your poison? Grin or gin?" --Carl Johnson

"Man I couldn't find that wet I buried, so I'm making my own. It's easy, fool!" --Ryder

"That ese put dust in my grin."
4. grin
smile so sickly sweet it make onlookers through up on site, or passing meat heats punch the grinning idot!
look at the grin on that bloke he looks like hes just got a new girlfriend
5. grin
Similar to the old enjoyable verticle smile. It's a hoe's pussy yo!
Gotta love the grin.
by Griz Nov 16, 2004 add a video
6. grin
when someones pants are not fully up and they bend over and thier bum crack "grins" at you
wow you seem happy today because your certainly grinning at me
7. Grin
The retarded type that can do nothing but smile. Such as the Wal-mart greeters, or that wierd old lady that lives down the street.
"Dude, he fucking walked into that wall. What a fucking grin."
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