1. ride in a hot-air balloon - He tried to balloon around the earth but storms forced him to land in China • Derivationally related forms: balloonist • Hypernyms: fly, aviate, pilot • Verb Frames: - Something ----s - Somebody ----s 2. become inflated - The sails ballooned • Syn: inflate, billow • Derivationally related forms: inflation (for: inflate) • Hypernyms: expand • Hyponyms: reflate • Verb Frames: - Something ----s - Something is ----ing PP