Urban Dictionary: *grin*

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.

by g.SPIN December 05, 2010

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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."

by tonp April 01, 2009

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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

by aidyaid87 October 24, 2009

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grinning

The toothless look on the face of an old person.

Further used to reference anything old.

Grandma is really grinning today.

By the time this pizza arrives I'll be grinning

by donjon May 04, 2007

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Grin

Girls Raised In the North
opposite of GRITS

by b July 12, 2003

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Grin

To reach first base.

Sarah and Jono grinned during the entire movie

by Josh June 05, 2004

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grin

Fellatio, oral sex, blow job

Dude did you hit that ? No I just caught some grin.

by jmo401 June 27, 2015

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