sound1

noun

• 1vibrations that travel through the air or another medium and can be heard when they reach a person’s or animal’s ear:light travels faster than sound
• a thing that can be heard:she heard the sound of voices in the hall don’t make a sound
• the area or distance within which something can be heard:we were always within sound of the train whistles

• 2 (also musical sound) sound produced by continuous and regular vibrations, as opposed to noise.
• short for speech sound.

• 3music, speech, and sound effects when recorded, used to accompany a film or video production, or broadcast: [as modifier]:a sound studio
• broadcasting by radio as distinct from television.
• the distinctive quality of the music of a particular composer or performer or of the sound produced by a particular musical instrument:the sound of the Beatles
• (sounds) informal music, especially popular music:sounds of the sixties

• 4the ideas or impressions conveyed by words:you’ve had a hard day, by the sound of it

verb

• 1emit or cause to emit sound: [no object]:a loud buzzer sounded [with object]:she sounded the horn
• [with object] give an audible signal to indicate (something):a different bell begins to sound midnight
• [with object] express or convey (a warning):pharmaceutical companies are sounding the alarm about counterfeit drugs
• [with object] test (the lungs or another body cavity) by noting the sound they produce:the doctor sounded her chest

• 2 [no object] convey a specified impression when heard: [with complement]:he sounded worried
• (of something or someone that has been described to one) convey a specified impression:it sounds as though you really do believe that [with complement]:the house sounds lovely