[ mou-zer ]
/ ˈmaʊ zər /


an animal that catches mice: Our cat is a good mouser.
a person or thing that seeks or prowls, as if for prey.

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. 2019

Examples from the Web for mouser

British Dictionary definitions for mouser


/ (ˈmaʊzə, ˈmaʊsə) /


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