(idiomatic) All over the world; globally; throughout the world.

Alternative form of World War I

The afterlife. / (religion, mythology) A metaphysical plane of existence parallel to the material world and occupied by spirits and other unearthly forces.

(idiomatic) Someone or something superior to all others of its sort.

All opportunities are open to someone; the world is theirs.

(Britain, idiomatic) Everybody; too many people; a huge crowd.

Death and destruction of life on Earth, especially human. / Destruction of Earth. / (idiomatic) Any change that seems catastrophic or devastating.

A better, often utopian (future) world. / A terrible, often oppressive or dystopian world.

World War I.

An exclamation made before committing suicide, in speech, text, or in a suicide note. / (humorous) A call said before taking a stiff drink, especially a shot of vodka.