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In the Lego online community, greeblies are the intricate details on the sides of spaceships and sci-fi MOCs that define the mechanics and workings of what the MOC is meant to be. They were famously used in the giant Star Destroyer Lego set a few years ago, and also in the more recent Death Star II set. Plates with rails are often used for greeblies because they have a protrusion that only sticks out half a stud without needing a jumper plate. (source: Brickspace.org)
Hey, that Star Destroyer has great Greeblies.
by 'John February 15, 2009

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things on the face plate on a power droid in star wars
You must add the greeblies to the faceplate for your power droid replica to be complete.
by Brian farthole May 25, 2005

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Yucky or unpleasant.
Don't do that, you'll make it all greebly.
by Tim Ween January 07, 2005

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any dirt, grime, grease, or dust left behind after it has already been cleaned.
After the floor is mopped you should sweep it again to get all the greeblies that the mop leaves behind.
Also if you don't rinse the dishes before you put them in the dish washer, there will be greeblies left on them.
by Nikki Cook March 12, 2006

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The creatures that cats chase and wrestle with. Greeblies are invisible to humans. They are mainly nocturnal creatures, but have been known to be active during the day.
Homes with cats are often known to be infested by greeblies.
by jwbookworm February 25, 2009

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Hungover, stanky, filmy, slept-in, unwashed yet funky cool. Boho babe magnet.
Saturday morn I'm all greebly but I get out and bop down Melrose for some grub. (Mid / late '80's)
by Randyland August 30, 2005

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Gross, grubby, greasy, dirty, etc
Shawna is super greebly.
by Kyara January 16, 2005

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