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1.
the abundance of loose fat on ones body.
Look at all that grissle on her thighs, she may be fat but she is the sweetest person
by T J Dubz October 29, 2007
 
2.
to grissle, to eat a ton a food AND or to eat any amount of food very quickly.
dude you just grissled that burritto.
or
what did you grissle for dinner.
by David Ruiz March 25, 2008
 
3.
to love affectionately
by Sol August 06, 2003