Definition of round out
: to bring to completion or fullness : finish out round out my quartet of Americana with an autobiography — E. A. Weeks the republic had rounded out a century of independence — Sidney Warren
: to grow round or plump
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 round out
First Known Use: 1856
Learn More about round out
Britannica English: Translation of round out for Arabic speakers
Seen and Heard
What made you want to look up round out? Please tell us where you read or heard it (including the quote, if possible).