noun soft mud.
2. slush ·noun a mixture of snow and water; half-melted snow.
3. slush ·vt to paint with a mixture of white lead and lime.
4. slush ·vt to smear with slush or grease; as, to slush a mast.
5. slush ·noun a soft mixture of grease and other materials, used for lubrication.
6. slush ·noun the refuse grease and fat collected in cooking, especially on shipboard.
7. slush ·noun a mixture of white lead and lime, with which the bright parts of machines, such as the connecting rods of steamboats, are painted to be preserved from oxidation.