Answer: aerostat

AnswerCrossword Clue
AEROSTAT

Dirigible, e.g.

AEROSTAT

Balloon or blimp

AEROSTAT

Balloon or dirigible

AEROSTAT
Airship.
AEROSTAT
Any lighter-than-air craft.
AEROSTATWeather balloon.
AEROSTATBalloon, e.g.
AEROSTATLighter-than-air aircraft
AEROSTATLighter-than-air craft