What is the actual meaning of embarks?

em·bark   [em-bahrk] Show IPA

verb (used without object)1.to board a ship, aircraft, or other vehicle, as for a journey.

2.to start an enterprise, business, etc.

verb (used with object)3.to put or receive on board a ship, aircraft, or other vehicle.

4.to involve (someone) in an enterprise.

5.to venture or invest (something) in an enterprise.