thundermug

plural thundermugs

1. datedslangchamber pot

   "No more midnight treks to the outhouse. No more close-stools or thundermugs a feature of even the most exalted houses in Armethalieh."

   2003, Mercedes Lackey/James Mallory, The Outstretched Shadow

   1 more example

   "The dining-room ceiling was hand-painted and the staircase gigantic, yet the royal family used porcelain washbowls and old-fashioned thundermugs".

   1944, Ernie Pyle, Brave Men, University of Nebraska Press, published 2001, page 80