Feather in one's cap
Meaning
A noteworthy achievement to be proud of.
Usage
Mentioned when praising someone's resume or accomplishments.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Warriors once added feathers to headgear to mark victories.
Travel journals from the 1600s described the practice among Native Americans and Europeans.