The term 'OLDIE' is a slang term used to describe something that is old but still good. It is often used to refer to music, movies, or other forms of entertainment that have been around for a while but are still popular and enjoyable. It can also be used to describe people who are considered to be wise and experienced due to their age. The term is often used in a positive way, as it implies that something has stood the test of time and is still appreciated.