free balloon
noun
a balloon, often equipped to carry passengers, that drifts with air currents and whose ascent and descent are controlled by the release of ballast and buoyant gas.
OTHER WORDS FROM free balloon
free ballooning, nounWords nearby free balloon
free and easy,
free as a bird,
free ascent,
free association,
free atmosphere,
free balloon,
free beach,
free bid,
free charge,
free church,
free churchman