noun
1. a crevice or recessed area, especially an ornamental one set in a wall to hold a statue, urn, or the like.
That niche is the best place to display that bust of Beethoven.
The climber found a niche for his fingers and somehow pulled himself up.
2. a situation or activity for which a person or organization is especially well suited.
He’d always been interested in chemistry but finally found his niche in chemical engineering.
3. the part of an ecological system occupied by a particular organism, or the functions of that organism in the system.
The niche of earthworms in the production of soil and growth of plants.
transitive verb
to place in a niche