niche - definition and synonyms

noun [countable] 

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/niːʃ/
singularniche
pluralniches
  1. 2
    a job or activity that you are good at and that is very suitable for you

    She’s never really found her niche in life.

  2. 3
    business an opportunity to sell a particular product or service that no one else is selling

    The company fills a niche in the digital TV market.