sound noun

• mechanical vibrations transmitted by an elastic medium

  "falling trees make a sound in the forest even when no one is there to hear them"
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• the sudden occurrence of an audible event

  "the sound awakened them"
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• the subjective sensation of hearing something

  "he strained to hear the faint sounds"
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• the particular auditory effect produced by a given cause

  "the sound of rain on the roof"

  "the beautiful sound of music"
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