What is a venture? And what does it mean to venture?

The word venture is used often in business but what does it mean? In the dictionary it is 'a risky or daring journey or undertaking'. But what does it mean in the enterprising context? I propose the following: - VENTURE: an agreement among people to do things in service of a purpose and according to a set of values - VENTURING: the process of creating and evolving a venture - VENTURER: a person primarily involved in or responsible for venturing