Noun: a person's nickname.
Somewhere between seventeen and twenty I predominantly stopped referring to the males I met by their true names. Instead I elaborated on some rather obvious aspect regarding their character, mannerism, nationality or look; voila a nickname was born. It just seemed easier when explaining a story to use a detail orientated adjective as an alternative instead of repeatedly clarifying who so and so was. This became a regular thing amongst my friends and I and to this day is still used on the daily.
A glimpse into our repertoire: