Entrepreneurship means that you are in business for yourself. You are essentially responsible for all parts of an organization. You are to be able to delegate different responsibilities to different people but at the end of the day, if something does or does not work, it is going to affect you much more than it affects the others that you have working for you.
Being an entrepreneur means that your job description is literally doing what it takes to make your business successful. That could be tasks such as the hiring/firing process, literally getting your hands dirty, phone calls, long nights and/or late hours, and much more. You have to do research, be organized and know what your end goal is in order to be in business for yourself.