- a person, animal, or thing that catches rats, as a terrier or a cat.
Origin of ratter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ratter
But then he's just as good a ratter as any black-and-tan you ever saw.Mark Gildersleeve
John S. Sauzade
I am told that Ratter was by no means satisfied with the affair.
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.
He was first bred by the mill hands in the Midland counties of England where he was famous as a ratter.The Dogs of Boytown
Walter A. Dyer