From the dictionary:

entrepreneur  (ˌɒntrəprəˈnɜː, French  ɑ̃trəprənœr)   — n
1.  the owner or manager of a business enterprise who, by risk and initiative, attempts to make profits
2.  a middleman or commercial intermediary
[C19: from French, from entreprendre  to undertake; see enterprise ]

Source: http://dictionary.reference.com/browse/entrepreneur

From real life:

An entrepeneur is one who follows a plan to create financial freedom for a life that is full and rewarding. This can be done in many different ways, but above all it involves hard work, dedication and a passion for what you are tying to achieve.

” Entrepreneurship is the pursuit of opportunity without regard to resources currently controlled.”

Are you an Entrepeneur?