Answer: aerostat

AnswerCrossword Clue
AEROSTATDirigible, e.g.
AEROSTATBalloon or blimp
AEROSTATBalloon or dirigible
AEROSTATAirship.
AEROSTATAny lighter-than-air craft.
AEROSTATWeather balloon.
AEROSTATBalloon, e.g.
AEROSTATLighter-than-air aircraft
AEROSTATLighter-than-air craft
aerostatan aircraft that is lighter than air
aerostatany lighter-than-air aircraft, as a balloon or dirigible