Definition of niche noun from the Oxford Advanced American Dictionary

     

    niche

     noun
    noun
    NAmE//nɪtʃ//
     
    , NAmE//niʃ//
     
    , NAmE//nɪtʃ//
     
    , NAmE//niʃ//
     
     
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  1. 1a comfortable or suitable role, job, way of life, etc. He eventually found his niche in sports journalism.
  2. 2(business) an opportunity to sell a particular product to a particular group of people They spotted a niche in the market, with no serious competition. a niche market the development of niche marketing (= aiming products at particular groups)
  3. 3a small hollow place, especially in a wall to contain a statue, etc., or in the side of a hill synonym nook The niche was just big enough to hold two small candles. I found a niche in the rock and sat and watched while the sun rose and filled the valley with light.
  4. 4(biology) the conditions of its environment within which a particular type of living thing can live successfully Within each niche, similar animals avoid competing with each other.
See the Oxford Advanced Learner's Dictionary entry: niche