Definitions
1.nounA 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.nounA function within an ecological system to which an organism is especially suited.
3.noun(by extension) Any position of opportunity for which one is well-suited, such as a particular market in business.
4.nounAn arrow woven into a prayer rug pointing in the direction of qibla.