Definition of "ratting" in English

verb

1. present participle and gerund of rat

   • Don't go ratting to the police about what happened.

noun

1. (archaic) The blood sport of setting a dog upon rats confined in a pit to see how many he will kill in a given time.

2. (uncountable) A vocation involving the pest control of rats, typically using a working terrier.

3. Desertion of one's principles.

4. Working as a scab, against trade union policies.