Required, essential, whether logically inescapable or needed in order to achieve a desired result or avoid some penalty. / Unavoidable, inevitable.

(chiefly UK, archaic, euphemistic, usually with the definite article) A place to do the "necessary" business of urination and defecation: an outhouse or lavatory. / (obsolete) Necessity.

Inevitably; of necessity.

The quality or state of being necessary, unavoidable, or absolutely requisite. / The condition of being needy; desperate need; lack. / Something necessary; a requisite; something indispensable.

Divination involving the dead or death. / Loosely, any sorcery or witchcraft, especially involving death or the dead, particularly sorcery involving raising or reanimating the dead.

An article of jewelry that is worn around the neck, most often made of a string of precious metal, pearls, gems, beads or shells, and sometimes having a pendant attached.

(South Africa) To informally execute by necklacing; by setting on fire a petrol-filled rubber tyre which has been put around the bound victim's neck.

(pathology) The localized death of cells or tissues through injury, disease, or the interruption of blood supply.

A person who practices or performs necromancy.

(church history) A church register containing the names of those connected with the church who have died. / A listing of people who have died during a specific period of time. / A notice of death.