Top Definition
Lack of white calcium like deposits around the tounge; black nubs, smelly, unsightly; lack of good oral hygiene; breath that smells like a corpse;
Dude if you don't brush your teeth your going to have melmouth.

Yuck! Did you see that women over there. She has melmouth.

I can smell that melmouth all the way over here.
by pseudonymsaywhat October 02, 2009
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