billet-doux/ˌbili ʹdooh, ˌbeeyay/ noun (pl billets-doux /-ʹdooh(z)/)

• ain't
• air
• air bag
• air base
• air bed
• air bladder
• airborne
• air brake
• air brick
• airbrush
• airburst
• Airbus
• air chief marshal
• air commodore
• air-condition
• air conditioning
• air-cool
• air corridor
• air cover
• aircraft
• aircraft carrier
• aircraftman
• aircrew
• air cushion
• air-cushion vehicle