gardyloo

[gahr-dee-loo]
interjection
  1. (a cry formerly used in Scotland to warn pedestrians when slops were about to be thrown from an upstairs window.)

Origin of gardyloo

1760–70; Anglicized form of French gare (de) l'eau beware of the water
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018