Dried poo tangled in the anal beard collected as a consequence of not wiping your arse.
Uhhhh I've got grints in my pants!

Shoulda' wiped man....
by grinter November 19, 2010
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To not pay a bill or other debt on time; to owe money.
"Ah sod it, I'm going to grint this bill because I can't afford to pay it"
by Phil Evans October 14, 2004
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When the flesh of an apple or other fruit has been dented or ripped by something and has been left to go brown.
The only apples that are left are covered in 'grints'
by Breathtaking Face September 03, 2016
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