WordWeb Online

1. A position particularly well suited to the person who occupies it
   "he found his niche in the academic world"
    
2. A small concavity
   - recess, recession, corner
    
3. An enclosure that is set back or indented
   - recess
    
4. (ecology) the status of an organism within its environment and community (affecting its survival as a species)
   - ecological niche

Derived forms: niches

Type of: concave shape, concavity, condition, enclosure, incurvation, incurvature, place, station, status

Encyclopedia: Niche