rat

Any of various long-tailed rodents resembling mice but larger, especially one of the genus Rattus.

Any of various animals similar to one of these long-tailed rodents.

A despicable person, especially one who betrays or informs upon associates.

A scab laborer.

A pad of material, typically hair, worn as part of a woman’s coiffure to puff out her own hair.

A person who frequently passes time at a particular place. Often used in combination.

To hunt for or catch rats, especially with the aid of dogs.

To reveal incriminating or embarrassing information about someone, especially to a person in authority.