JOURNEY [C] › a journey in an aircraft: Have you booked your flight yet? The flight to Chicago took 4 hours. AIRCRAFT [C] › an aircraft that carries passengers from one place to another: Flight 102 is ready for boarding at Gate 3. MOVEMENT [U] › when something flies or moves through the air: an eagle in flight a flight of stairs/steps › a set of stairs: The lift was broken so we had to climb six flights of stairs.