noun

1. 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.

2. A function within an ecological system to which an organism is especially suited.

3. (by extension) Any position of opportunity for which one is well-suited, such as a particular market in business.

Synonyms: nook, specialization, specialty

verb

1. To place in a niche.

   “a niched vase”

2. To specialize in a niche, or particular narrow section of the market.

adjective

1. Pertaining to or intended for a market niche; having specific appeal.

   “niche audience”