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1. Any thick, viscous matter
   - sludge, slime, goo [informal], goop [N. Amer, informal], gook [informal], guck [N. Amer, informal], gunk [informal], ooze, thick, gloop [Brit, Cdn, informal]
    
2. Faecal matter of animals
   - droppings, dung, scat

1. Remove muck, clear away muck, as in a mine
    
2. Spread manure, as for fertilization
   - manure
    
3. Soil with mud, muck, or mire
   "The child mucked up his shirt while playing ball in the garden";
   - mire, mud, muck up [informal]

Derived forms: mucking, mucked, mucks

Type of: begrime, bemire [archaic], BM, colly [archaic], dejection, dirty, faecal matter [Brit, Cdn], faeces [Brit, Cdn], fecal matter [N. Amer], feces [N. Amer], grime, matter, ordure, remove, scatter, soil, spread, spread out, stool, take, take away, withdraw

Encyclopedia: Muck, Scotland