Definition of free balloon
: a balloon which can be made to ascend by the use of ballast and to descend by the release of gas but which cannot be guided in flight
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
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!
Seen and Heard
What made you want to look up free balloon? Please tell us where you read or heard it (including the quote, if possible).