What does SOUND mean?

noun

1. the particular auditory effect produced by a given cause“the sound of rain on the roof”
2. the subjective sensation of hearing something“he strained to hear the faint sounds”
3. mechanical vibrations transmitted by an elastic medium“falling trees make a sound in the forest even when no one is there to hear them”
4. the sudden occurrence of an audible event“the sound awakened them”
5. the audible part of a transmitted signal“they always raise the audio for commercials”
6. (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language
7. a narrow channel of the sea joining two larger bodies of water
8. a large ocean inlet or deep bay“the main body of the sound ran parallel to the coast”