powder room

/P AW1 D ER0 R UW1 M/
noun
  1. 1

    Short for half bathroom.

noun
  1. 1

    A room belonging to some or all women, particularly:

Synonyms

noun
  1. 1

    A room used to store gunpowder, particularly on a ship equipped with cannon.

    โ€œAre you insane? Don't take a candle into the powder room!โ€

  2. 2

    A room used to powder hair and wigs.

Source: https://en.wiktionary.org/wiki/half%20bath, https://en.wiktionary.org/wiki/ladies'%20room, https://en.wiktionary.org/wiki/powder%20room