1. a strong desire to achieve something, especially success, power, or fame
2. something that you want to achieve very much

Examples

• Her ambition is to become a doctor.
• He has great ambition and works very hard.
• The company’s ambition to expand globally is impressive.
• She achieved her childhood ambition of writing a novel.
• His political ambitions are well known.
• The team’s ambition to win the championship drives their training.
• She lacks the ambition needed for this demanding career.