WC

noun
  1. An abbreviation for 'water closet', a term used to refer to a flush toilet or a room containing a toilet. noun
    The sign on the door indicated that the WC was occupied.
    In many European countries, public restrooms are often labeled as WC.
  2. A term used to denote a bathroom or restroom, especially in British English. noun
    She asked the waiter where the WC was located.
    The hotel room had an en-suite WC for convenience.