1. a post or marker placed along a road or path to indicate distance in miles
2. an important event or stage in development or progress
Usage: figurative

Examples

• The old highway had mileposts every mile to help travelers track their progress.
• We stopped at milepost 47 to check our map.
• The wooden milepost showed we had 15 miles left to the city.
• Graduating from college was an important milepost in her life.
• The company’s first million in sales marked a significant milepost.
• Each milepost along the trail was numbered and painted white.
• Reaching age 30 felt like a major milepost for him.