Answer: CONCORDE
The answer CONCORDE has 15 possible clues. See the results below.
Possible Clues:
- Supersonic airliner
- Former fast flier
- Retired supersonic passenger jet
- A place in Paris for rapid transport once
- Verbal agreement that's no longer up in the air
- Retired boomer?
- Line in solid design of aeronautical engineering triumph
- Erstwhile Heathrow lander
- What might be pulled in shape for plane
- Retired Mach I breaker