Definitions For Rat

noun

• 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
• Someone who works (or provides workers) during a strike
• A small animal that has a pointed nose and a long, thin tail
• A person who is not loyal or who cannot be trusted
• A person who is bad or cruel
• To tell someone in authority (such as the police) about something wrong that someone has done : to betray someone ( US)

verb

• Give away information about somebody
• 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