gardyloo /ɡɑːdɪˈluː/noun 3exclamation 1forms 1 noun3 •An act of discarding waste or some other substance from a height. Also attributive and figurative.Siobhan Clarke looked like she'd stepped under a gardyloo bucket. She tried not to show it, and smiled whenever she saw him looking in her direction, but there was definitely something up with her. — 1993 •(Scotland, historical) A cry of “gardyloo”.In many of the less developed areas, rubbish is left on the streets, and dirty water is still flung from the windows without so much as a "gardyloo." — 1964 •(figurative) Caution, warning.Released but a few weeks before Gremlins, this film drew only foreshadowings of concern that spiraled up into hysterical gardyloos when Gremlins made its debut. — 1985 exclamation1 •(Scotland, historical) A cry used to warn passersby that a vessel of wastewater is about to be emptied into the street.Gardyloo is a word logophiles find irresistible. According to Ms. Sperling, gardyloo was, "in old Edinburgh, a warning cry before throwing dirty water from windows into the street in the 1770s. […]" — 1979 formsgardyloos