a homeless, usually mongrel, cat that scavenges for food in alleys, streets, etc.
Origin of alley cat
First recorded in 1900–05
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for alley cat
a homeless cat that roams in back streets
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Idioms and Phrases with alley cat
A promiscuous woman; also, a person of loose morals. For example, She's constantly picking up men in bars—a real alley cat. This idiom transfers a stray cat that frequents alleys in search of food to a woman of easy virtue, especially a prostitute seeking customers. [Slang; early 1900s]
The American Heritage® Idioms Dictionary
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