: people in general :humanity<The whole world knows his name.>
: a state of existence <a future world>
: a great number or amount <a world of troubles>
: a part or section of the earth <Antarctica is a unique world.>
: an area of interest or activity <the world of politics>
Word History of WORLD
The original meaning of world, which goes back to Old English weorold, was “lifetime,” which makes sense in view of the word's makeup: it was a compound of Old English wer, “man,” and an element -old that meant “age” or “period of time” and is related to modern English old. Already in Old English, though, the word had extended meanings, such as “human life in general,” or “the earth and everything living on it.” These are some of its most common meanings today.