Top Definition
Large, ming-a-ding-ding string of sticky green snot excreted from the mouth.
There was a swinging grolly hangihng from the bus ceiling.
by Cat Heath November 05, 2003

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a gelatinous concentration of built up man mucus, usually expelled upon faces. The man suffering from this build up within his sack (also known as the groller) will actively seek a recipient depending on their orientation (also known as the grollee)
"by gosh i've accumulated quite the grolly, quick Ron come hither, expelliarmus!"
by grollyrocket January 21, 2015

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a wad of mucus from the nose
"I sneezed out a green grolly with hairs in."
by Mad Walrus August 04, 2002

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Congealed nasal mucus. Booger or bogey. Plural of grolly.
I need some tissue because I've got some big grollies up my hooter.
by #Pezza# January 13, 2008

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Guardian Readers Of Limited Intelligence In Ethnic Skirts
One Doctor to another:"She's tried everything to cure It- vegetarian diet, acupuncture, hypnosis, cystals, homeopathy... one of your typical Grollies!
by wolseley March 13, 2008

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hairy wheels, nadjas
by Urbandurban July 04, 2003

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creeper or crawler of unpleasant type - nits, gnats, maggots etc.
waiter! there is a grolly in my salad
by deb o'hara November 13, 2004

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