Definition of pet noun from the Oxford Advanced American Dictionary

      

    pet

     noun
    noun
    NAmE//pɛt//
     
     
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  1. 1an animal, a bird, etc. that you have at home for pleasure, rather than one that is kept for work or food Do you have any pets? a pet dog/hamster, etc. a family/domestic pet pet food a pet store (= where animals are sold as pets)
  2. 2 (usually disapproving) a person who is given special attention by someone, especially in a way that seems unfair to other people synonym favorite She's the teacher's pet.
See the Oxford Advanced Learner's Dictionary entry: pet