loo

noun
  1. A British informal term for a toilet or bathroom. noun
    She excused herself to go to the loo.
    The sign pointed to the nearest loo in the restaurant.
  2. A card game, also known as 'Lanterloo', which was popular in the 17th and 18th centuries. noun
    They gathered around the table to play a game of loo.
    Loo was a favorite pastime among the aristocracy in the 1700s.