1. a wind blowing in the same direction as the course of a ship or aircraft
2. a force or influence that helps someone or something move forward or succeed
Usage: figurative

Examples

• The plane arrived early thanks to a strong tailwind.
• Runners hoped for a tailwind during the marathon.
• The company benefited from the tailwind of a booming economy.
• Favorable regulations provided a tailwind for the industry.
• The cyclist struggled against a headwind on the way out but enjoyed a tailwind coming back.
• Tech stocks rode the tailwind of investor optimism.