What 남 means
Alone, 남 means “someone else”; compounds can mean “south” or “man.” In 남의 일, 의 marks possession.
Hanja are Chinese characters used in Korean. 南 supplies the “south” reading; 男 supplies “man.” 남쪽 means “south,” and 남자 means “man.”
Hangul was created in 1443 and published in 1446 to make Korean writing easier. The noun is attested in 1447 in Yongbi eocheonga, an early Korean literary work; this dates the word, not necessarily this spelling. Unicode can store 남 as one block or equivalent jamo (Hangul building blocks); normalization changes the representation, not its reading.
Combination ideas
3Questions people ask
1Why does 남 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 남
남\B0A8Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

