Definition of rat

noun (n)

• any of various long-tailed rodents similar to but larger than a mouse (noun.animal)

  source: wordnet30
• someone who works (or provides workers) during a strike (noun.person)

  Synonym: blackleg, scab, strikebreaker
  

  source: wordnet30
• a person who is deemed to be despicable or contemptible (noun.person)

  Synonym: bum, crumb, dirty dog, git, lowlife, puke, rotter, scum bag, skunk, so-and-so, stinker, stinkpot
  

  Example:
  Kill the rat.
  

  source: wordnet30
• one who reveals confidential information in return for money (noun.person)

  Synonym: betrayer, blabber, informer, squealer
  

  source: wordnet30
• a pad (usually made of hair) worn as part of a woman's coiffure (noun.artifact)

  source: wordnet30
• One of several species of small rodents of the genus Mus and allied genera, larger than mice, that infest houses, stores, and ships, especially the Norway, or brown, rat (M. decumanus), the black rat (M. rattus), and the roof rat (M. Alexandrinus). These were introduced into America from the Old World. (noun)

  source: webster1913

verb (v)

• desert one's party or group of friends, for example, for one's personal advantage (verb.social)

  source: wordnet30
• employ scabs or strike breakers in (verb.social)

  source: wordnet30
• take the place of work of someone on strike (verb.social)

  Synonym: blackleg, fink, scab
  

  source: wordnet30
• give (hair) the appearance of being fuller by using a rat (verb.contact)

  source: wordnet30
• catch rats, especially with dogs (verb.contact)

  source: wordnet30
• give away information about somebody (verb.communication)

  Synonym: betray, denounce, give away, grass, shit, shop, snitch, stag, tell on
  

  source: wordnet30
• In English politics, to desert one's party from interested motives; to forsake one's associates for one's own advantage; in the trades, to work for less wages, or on other conditions, than those established by a trades union. (verb)

  source: webster1913

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