powdering tub

from The Collaborative International Dictionary of English v.0.48

Powdering \Pow"der*ing\,
   a. & n. from {Powder}, v. t.
   [1913 Webster]

   {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.
       [1913 Webster]