Noun | 1. | rat - any of various long-tailed rodents similar to but larger than a mouse |
| 2. | rat - someone who works (or provides workers) during a strike |
| 3. | rat - a person who is deemed to be despicable or contemptible; "only a rotter would do that"; "kill the rat"; "throw the bum out"; "you cowardly little pukes!"; "the British call a contemptible person a `git'"Synonyms: dirty dog, git, lowlife, puke, rotter, scum bag, skunk, so-and-so, stinker, stinkpot, bum, crumb |
| 4. | rat - one who reveals confidential information in return for money |
| 5. | rat - a pad (usually made of hair) worn as part of a woman's coiffure |
Verb | 1. | rat - desert one's party or group of friends, for example, for one's personal advantage |
| 2. | rat - employ scabs or strike breakers in |
| 3. | rat - take the place of work of someone on strike |
| 4. | rat - give (hair) the appearance of being fuller by using a rat |
| 5. | rat - catch rats, especially with dogs |
| 6. | rat - give away information about somebody; "He told on his classmate who had cheated on the exam" |