Answer: airships

AnswerCrossword Clue
AIRSHIPSZeppelins.
AIRSHIPSBlimps.
AIRSHIPSDirigibles
AIRSHIPSZeppelins
airshipsA power-driven aircraft that is kept buoyant by a body of gas (typically helium, formerly hydrogen) that is lighter than air
airshipsAIRSHIP, a mechanically driven lighter than air aircraft