English definition of “world”
the world › the Earth and all the people, places, and things on it: Everest is the highest mountain in the world. She's travelled all over the world.
› [C] the people and things that are involved in a particular activity or subject: [usually singular] the entertainment world the world of politics
the developing/industrialized/Western, etc world › a particular area of the Earth
the plant/animal, etc world › plants/animals, etc as a group
your world › your life and experiences: His whole world fell apart when she left. → See also have the best of both worlds → See also not be the end of the world → See also the Old World → See also the outside world → See also the Third World → See also be on top of the world