Top Definition
A large and vocal black bird that likes to gather in large groups and take dumps.
Grackles lend themselves to certain recreational persuit chief among them, Greasing Grackles. eg;
"This morning, I greased three grackles with my Marlin 39a loaded With CCI mini-caps"
by J E Walker April 29, 2003

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For those living in the British Isles, grackles are groups of tourists. Grackles typically pour out of busses onto streets, blocking regular foot traffic and creating a general nuisance. Ironically, the more a city complains about grackles, the more it probably needs grackle tourism money to stay out of bankruptcy. Typically, one can find grackles flocking outside of major historical landmarks and international fast food chains. Grackles come from all continents. For the imagery concerning why this name is so appropriate, see definition 1.
It took me 45 minutes just to walk down Cornmarket Street because of all the grackles waiting to get into McDonalds.
by Lexasaurus March 31, 2009

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A brand name combining the words "GRAnular", "cRACK" and "spACKLE"; a spackle-like buttplug to safeguard one's plum during short periods of incarceration.
Yolanda, call my lawyer and bail bondsman and bring my toothbrush, putty knife and grackle.
by harry flashman July 19, 2003

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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