n. Sludge, or watery mire; soft mud.n. Melting snow; snow and water mixed.n. A mixture of grease and other materials used as a lubricator.n. The refuse of the cook's galley on board ship, especially greasen. A mixture of white lead and lime with which the bright parts of machinery are covered to prevent their rusting.To apply slush to; grease, lubricate, or polish with slush: as, to slush the masts.To wash roughly: as, to slush a floor with waterTo cover with a mixture of white lead and lime, as the bright parts of machinery.To fill, as the joints and spaces between the bricks or stones of a wall, with mortar or cement: usually with up: as, to slush up a wall.To slop; spill.