Definition of Niche

Noun: niche nich [N. Amer], neesh [Brit]

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