What does being a Shawty mean?

1. an attractive young woman; someone’s girlfriend. Give this to my shawty. Hey!

Is a shawty a girl or boy?

The word shawty is a slang word most frequently used to refer affectionately to a younger female. There are no categorical antonyms for this word. However, one could loosely use, e.g., old man (an affectionate form of address for an older man), as an antonym.