Mouser \Mous"er\, n. 1. A cat that catches mice; as, a good mouser is better than a dozen mousetraps. [1913 Webster +PJC] 2. One who pries about on the lookout for something. [1913 Webster]
27 Moby Thesaurus words for "mouser": Cheshire cat, Chinchilla cat, Maltese cat, alley cat, blue cat, calico cat, cat, feline, gib, gib-cat, grimalkin, house cat, kit, kitling, kitten, kitty, kitty-cat, puss, pussy, pussycat, silver cat, tabby, tabby cat, tiger cat, tom, tomcat, tortoise-shell cat