- - Booming speed
- - Speed of sound (CHAIM anagram)
- - Barrier-breaking speed
- - Speed exceeded by SSTs
- - Speed-of-sound term.
- - A certain speed of sound.
- - Speed at the sound barrier.
- - The speed of sound
- - Speed of sound
- - Military specialist
- - Chuck Yeager's breakthrough
- - Yeager's breakthrough
- - Chuck Yeager goal?
- - It's roughly 761 MPH
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- [ Other definitions ]