the world > physical sensation > cleanness and dirtiness > dirtiness > dirt > [noun] > messy or distasteful material (3)
slang (chiefly U.S. regional). An unpleasant or messy substance.
Originally U.S. An unpleasant substance; dirt, muck; (also) any substance viewed as objectionable in some way.
Messy, unpleasant, or distasteful material. literal and figurative.