1. present participle of embark; boarding a ship, aircraft, or other vehicle to begin a journey
Usage: commonly used in travel and transportation contexts
2. present participle of embark; beginning or starting an undertaking, project, or course of action
Usage: figurative use; often followed by 'on' or 'upon'

Examples

• Passengers were imbarking on the cruise ship when the announcement was made.
• The team is imbarking on a new research project next month.
• We watched travelers imbarking at the airport terminal.
• She felt nervous about imbarking on her first solo business venture.
• The airline began imbarking first-class passengers early.
• They are imbarking on an ambitious plan to expand the company internationally.