Begin (verb)

1. To start or commence an action or process.
2. To have or take the first step in an action or process.
3. To have or take the initiative or leadership in an action or process.
4. To originate or come into existence.
5. To undertake or start a particular activity or task.

Origin:

Derived from old english 'beginnan' meaning 'to commence'.

Examples:

1. Let's begin the presentation.
2. She began the dance.
3. He began the revolution.
4. The story begins with a boy.
5. We will begin the project next week.