Definitions
1.NounThe quality or state of being necessary, unavoidable, or absolutely requisite."I bought a new table out of necessity. My old one was ruined."
2.NounThe condition of being needy; desperate need; lack.
3.NounSomething necessary; a requisite; something indispensable."A tent is a necessity if you plan on camping."
4.NounSomething which makes an act or an event unavoidable; an irresistible force; overruling power."After eating a full meal, the human body's necessity for food will compel the person to eat again in the future."
5.NounThe negation of freedom in voluntary action; the subjection of all phenomena, whether material or spiritual, to inevitable causation; necessitarianism. (Can we add an example for this sense?)
6.NounGreater utilitarian good; used in justification of a criminal act."doctrine of necessity"
7.NounIndispensable requirements (of life).