Definition of "World" :

noun: all of the living human inhabitants of the earth

"All the world loves a lover."

noun: the concerns of this life as distinguished from heaven and the afterlife

"They consider the church to be independent of the world."

noun: all of your experiences that determine how things appear to you

"His world was shattered."

noun: people in general; especially a distinctive group of people with some shared interest

"The Western world."

noun: people in general considered as a whole

noun: the 3rd planet from the sun; the planet we live on

"He sailed around the world."

noun: everything that exists anywhere

noun: a part of the earth that can be considered separately

"The outdoor world."

adjective: involving the entire earth; not limited or provincial in scope

"A world crisis."