sound

adjective1 of 2

waves traveling in air or water that can be heard

• “Original sentences are more likely to sound natural than translations.”Tatoeba
• “The sound of her heart beating was calming to him.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

interjection2 of 2

Yes; used to show agreement or understanding, generally without much enthusiasm.