軟なん式しき飛ひ行こう船せん

noun

non-rigid airship; blimp

Technical term for a lighter-than-air aircraft without a rigid internal framework; the envelope maintains its shape through internal gas pressure.

• 軟なん式しき飛ひ行こう船せんは、内ない部ぶのガス圧あつで形かたち