1. go on board a ship or aircraft

He embarked for India in 1817.

to put or take on board a ship or aircraft

The passengers were ready to be embarked.

2. To start a journey, to start something; to begin (a course of action)

They are about to embark on an unforgettable adventure.

embark (on/upon): begin

She embarked on a new career.

embarkment (n)