niche

noun

1. a position particularly well suited to the person who occupies it

   noun.state

   Examples

   He found his niche in the academic world.

   Source: WordNet 3.0

2. a small concavity

   noun.shape

   Synonyms corner recess recession

   Source: WordNet 3.0

3. an enclosure that is set back or indented

   noun.artifact

   Synonyms recess

   Source: WordNet 3.0

4. (ecology) the status of an organism within its environment and community (affecting its survival as a species)

   noun.state

   Synonyms ecological niche

   Source: WordNet 3.0

5. A cavity, hollow, or recess, generally within the thickness of a wall, for a statue, bust, or other erect ornament. hence, any similar position, literal or figurative.

   noun

   Source: webster1913