Definition of cooper's flag
: the cattail whose long leaves are sometimes used between barrel staves to make the barrel watertight
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of cooper's flag
Seen and Heard
What made you want to look up cooper's flag? Please tell us where you read or heard it (including the quote, if possible).