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Origin of mouser

Middle English word dating back to 1350–1400; see origin at mouse, -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of mouser

British Dictionary definitions for mouser


  1. a cat or other animal that is used to catch mice: usually qualifieda good mouser
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mouser

"cat that hunts mice," c.1400, agent noun from mouse (v.).

Online Etymology Dictionary, © 2010 Douglas Harper