軽けい気き球きゅうけいききゅうMeanings1noundirigible balloonHistorical term for a steerable lighter-than-air craft; now largely replaced by 飛行船 (airship).軽けい気き球きゅうは19世せい紀き末まつから20世せい紀き初しょ頭とうにかけて使つかわれた。Dirigible balloons were used from the late 19th century to the early 20th century.
