noun

• A dog or other animal that is used for hunting rats.

  ‘Long-tailed weasels are good mousers and ratters, so farmers do not mind having weasels around their farms because they eliminate these pests.’

  More example sentences

  • ‘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.’
  • ‘But when given a chance the Airedale can still be an expert ratter and can also be trained to the gun.’
  • ‘But young Pickles turned out to be an excellent ratter and was a favourite amongst our neighbours.’