pet - definition and synonyms

noun [countable] 

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  1. 1
    an animal or bird that you keep in your home and look after
    1. a.
      [only before noun] kept as a pet or relating to pets

      a pet dog/rabbit

      pet owners

      a pet shop

  2. 2
    informal someone who you give special treatment to because you like them more than others
    See also teacher’s pet
  3. 3
    British spoken used for talking to someone in a friendly way