Word:
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soul mate
Soul scot
soul-destroying
soul-searching
soul-stirring
Souled
soulful
soulfully
soulfulness
Soulili
Soulless
Soullessly
Soun
Sound
sound alphabet
sound asleep
-- sound barrier --
sound bite
Sound Blaster
Sound boarding
sound bow
sound camera
sound card
Sound currency
Sound dues
sound effect
sound film
sound hole
sound judgement
sound judgment
sound law
Sound mind
sound off
sound barrier
Noun
1.
sound barrier
-
the
increase
in
aerodynamic
drag
as
an
airplane
approaches
the
speed
of
sound
Synonyms:
sonic barrier
drag
,
retarding
force
,
sonic
barrier
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