(idiomatic) Entirely, to all appearances.

(philosophy) The world consisting of all the objects and events which are experienceable or whose existence is accepted by the human mind, but which exist independently of the mind.

The mythical giant sea turtle or tortoise that upholds the World in various cosmologies.

(video games) An area in a video game from which most or all of the game's levels are accessed. / (science fiction) A planet which serves as a hub.

plural of world-beater

The winner of a world cup or world championship.

(as a minimum) Those Arabic-speaking independent states where Arabic is the main official and spoken language.

a person, group, or country, deemed superior in their field. / the leader of a country, such as the president, prime minister, etc.

(obsolete) A state of prosperity.

(Christianity) An epithet of Jesus.