rat - noun

any of various long-tailed rodents similar to but larger than a mouse

someone who works (or provides workers) during a strike

a person who is deemed to be despicable or contemptible

one who reveals confidential information in return for money

a pad (usually made of hair) worn as part of a woman's coiffure

rat - verb

• desert one's party or group of friends, for example, for one's personal advantage
• employ scabs or strike breakers in
• take the place of work of someone on strike
• give (hair) the appearance of being fuller by using a rat
• catch rats, especially with dogs
• give away information about somebody

rat - thesaurus

betrayer   blabber   blackleg   crumb   fink   git   informer   lowlife   puke   rotter   scab   skunk   squealer   stinker   stinkpot   strikebreaker