Feather in your cap

The phrase "feather in your cap" is an idiomatic expression that means an achievement or accomplishment that one can be proud of. It often refers to a notable success or recognition that adds to one's reputation or prestige. The concept comes from the tradition of awarding feathers as a decorative addition to a cap or hat, symbolizing an achievement or distinction. These feathers were often displayed as a visible sign of honor or recognition for a person's accomplishments.