• any of various long-tailed rodents similar to but larger than a mouse
• a pad (usually made of hair) worn as part of a woman''s coiffure
• one who reveals confidential information in return for money
• 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''"
• someone who works (or provides workers) during a strike
• give away information about somebody; "He told on his classmate who had cheated on the exam"
• catch Rats, especially with dogs
• give (hair) the appearance of being fuller by using a Rat
• take the place of work of someone on strike
• employ scabs or strike breakers in
• desert one''s party or group of friends, for example, for one''s personal advantage

'Rat' in other languages