Alley cat Posted by ESC on May 02, 2005 In Reply to: Alley cat posted by Kat on May 02, 2005 : What is the origin of the idiom "alley cat"? A cat that lives in the alley? As opposed to a housecat. Alley cat David FG 03/May/05 Alley cat Smokey Stover 04/May/05 Alley cat David FG 04/May/05