Source : Webster's Revised Unabridged Dictionary (1913)

Slush \Slush\, v. t. [imp. & p. p. {Slushed}; p. pr. & vb. n.
   {Slushing}.]
   1. To smear with slush or grease; as, to slush a mast.

   2. To paint with a mixture of white lead and lime.