1. [ noun ] (transportation) large tough non-rigid bag filled with gas or hot air
Related terms: lighter-than-air_craft hot-air_balloon meteorological_balloon trial_balloon ripcord envelope
2. [ noun ] small thin inflatable rubber bag with narrow neck
Related terms: plaything
3. [ verb ] (transportation) ride in a hot-air balloon

"He tried to balloon around the earth but storms forced him to land in China"

Related terms: fly balloonist
4. [ verb ] become inflated
Synonyms: billow inflate

"The sails ballooned"

Related terms: expand reflate inflation
Similar spelling:   Balon