What does the word powder mean?

Usage examples for powder

  1. Penny left a call for Miss Kippenberg's car and then went back to the powder room. – Danger at the Drawbridge by Mildred A. Wirt
  2. " Powder my back, there's a darling," cried some one else. – The Garden Party by Katherine Mansfield
  3. Give one powder every four hours in their drinking water. – The Veterinarian by Chas. J. Korinek