飛ひ行こう服ふくひこうふくMeanings1nounflight suit; flight uniformRefers to the specialized clothing worn by pilots, aircrew, or astronauts during flight operations.パイロットは飛ひ行こう服ふくに着き替がえてからコックピットに向むかった。The pilot changed into a flight suit before heading to the cockpit.