1. posts or markers placed at intervals of one mile along a road or path to indicate distance
2. significant events or stages that mark progress in a process or journey
Usage: figurative

Examples

• The highway mileposts helped us track our progress on the long drive.
• Ancient Roman roads featured stone mileposts every thousand paces.
• The runner checked the mileposts to gauge her pace during the marathon.
• Graduating from college was one of the important mileposts in her life.
• The company celebrated several mileposts in its growth this year.
• Each milepost along the trail showed the distance to the summit.
• The project manager identified key mileposts for the development timeline.