Source : Webster's Revised Unabridged Dictionary (1913)

Powdering \Pow"der*ing\,
   a. & n. from {Powder}, v. t.

   {Powdering tub}.
   (a) A tub or vessel in which meat is corned or salted.
   (b) A heated tub in which an infected lecher was placed for
       cure. [Obs.] --Shak.