A dog or other animal that is used for hunting rats.
More example sentences
- Long-tailed weasels are good mousers and ratters, so farmers do not mind having weasels around their farms because they eliminate these pests.
- You should keep in mind the Carin was bred to be a ratter.
- Its original purpose was as a ratter, working very hard to to remove rodents from places such as kitchens and stables.
Definition of ratter in:
- The US English dictionary