1. important events or achievements that mark significant progress or stages in development
2. stone markers placed along roads to show distances to destinations
Usage: historical

Examples

• Learning to walk and talk are important milestones in a child’s development.
• Graduating from college was one of the major milestones in her life.
• The company celebrated several milestones this year, including its 50th anniversary.
• His first published novel marked a significant milestone in his writing career.
• The project manager tracked key milestones to ensure the team stayed on schedule.
• Ancient Roman roads were marked with stone milestones every thousand paces.
• Reaching one million users was a crucial milestone for the startup.