• WordNet 3.6
    • n ratter any of several breeds of terrier developed to catch rats
    • n ratter a disloyal person who betrays or deserts his cause or religion or political party or friend etc.
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Webster's Revised Unabridged Dictionary
    • Ratter Anything which catches rats; esp., a dog trained to catch rats; a rat terrier. See Terrier.
    • Ratter One who, or that which, rats, as one who deserts his party.
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Century Dictionary and Cyclopedia
    • n ratter One who catches rats; a rat-catcher.
    • n ratter An animal which catches rats, as a terrier.
    • n ratter One who rats, or becomes a renegade; also, a workman who renders himself obnoxious to a trades-union. See ratting, 2.
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Chambers's Twentieth Century Dictionary
    • ns Ratter a terrier which catches rats
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Chambers's Twentieth Century Dictionary
A.S. ræt; Ger. ratte.


In literature:

But Jip it was who, scratching at the foot of the slab like a good ratter, made the discovery which led to our final success.
"The Voyages of Doctor Dolittle" by Hugh Lofting
Bertrand stole all he could lay his hands upon, and as for Ratter, he gave more attention to cheese than he did to the mice.
"The Original Fables of La Fontaine" by Jean de la Fontaine
Alan kept a ferret, which he offered to bring, and he thought he could borrow his brother Herbert's fox-terrier, which was a famous ratter.
"Hunter's Marjory" by Margaret Bruce Clarke
My dog here is a good ratter, and I think he'll be able to polish off a few for you.
"Young Tom Bowling" by J.C. Hutcheson
Sam likes a dog that is a ratter.
"Four Little Blossoms at Brookside Farm" by Mabel C. Hawley
He was the best ratter you ever see.
"Gold" by Stewart White
Some dogs, however, that are not bad retrievers, are capital ratters, but they are exceptions to the general rule.
"The Dog" by Dinks, Mayhew, and Hutchinson
The "ratters" only trap when the fur is at its best, so that the supply is holding out.
"Fur Farming" by A. R. Harding
They are such good ratters that neither mice nor rats will frequent the house they inhabit.
"The Domestic Cat" by Gordon Stables
They are excellent ratters and rabbiters.
"A Manual of Toy Dogs" by Mrs. Leslie Williams

In news:

Although the breed was probably developed as a ratter, most Miniature Schnauzers today are primarily companion dogs.